Grace Harris likes some noise from the crowd when she pumps those big sixes out of the park, the kind that were met with quieter responses for three years when she was with 'another team'.

Not happening in RCB colours.

Ample people turned up in Navi Mumbai to make that noise - more than they turned up even for Mumbai Indians - and RCB responded with four wins in four games, overcoming concerns of player availability and doubts over the balance of the side. With two victories more than any other team in the competition, they head to the second leg of the season unbeaten and at the top of the table.

They head into the second phase as the best bowling side in the competition so far, having conceded only 616 runs across four innings (154 runs per innings). Leading their charge, and setting up the tone of their dominance with the ball has been Lauren Bell, who has taken advantage of the swinging conditions and operated in tight channels with her varied lengths.

She set the stage in the first over of the tournament itself with her spell to Amelia Kerr. Bringing it in first up, and then teasing the makeshift opener successfully with three successive away swingers and ending up with a maiden. That wasn't a one-off for Bell. Match-after-match, batters struggled to even middle her swinging deliveries in the opening over. The other batters tested with her new-ball spells included an illustrious list of Meg Lanning, Sophie Devine, Laura Wolvaardt, Lizelle Lee and Shafali Verma.

It hasn't just been the movement with the new ball; Bell has also been able to generate sharp bounce and use her slower deliveries effectively in the rare few overs she has delivered in the death. Despite bowling a large chunk of her overs in the powerplay, she has been the most economical bowler in the ongoing season, conceding at only 5.31, and has even picked up eight wickets - the early damage as well as the late strikes with her slower balls when batters are looking to come after her, like Shafali Verma did on Saturday.

The coin toss going in RCB's favour in three out of four games probably helped Bell operate in friendlier conditions, but that's not to take away how controlling and threatening she has proven to be in dictating the contests, unlike any other powerplay bowler in the competition so far.

Harris, who has faced a fair bit of the English pacer in the nets, has been left quite impressed by her skills this season. "I've faced her a little bit in the nets recently and I've been a bit like, 'What?'

"I'd rather be down the other end [instead of facing Bell]," Harris said. But the funniest thing is that sometimes I've even said to Belly, 'Like, did you mean to bowl that?'

"And she goes, 'no, it just comes out'.

"I was like, 'OK, we'll take it'."

The moment Harris was referring to was the delivery that Bell bowled to dismiss Laura Wolvaardt in the opening over, which nipped back in a long way and got an inside edge to crash on to the stumps.

"Obviously she's got really great control up front with the away swing on length and she hits a hard length," Harris added. "But with her height, she actually generates quite good steep bounce compared to other pace bowlers over here in the conditions. That's kind of an underrated asset.

"She's done very well for us up front, even at the back end to come on and bowl out the back of the hand slower balls with a wet ball the other night and on a wicket that just slides on. She's quite adaptable to a scenario, but also executing very well for us."

While Bell has repeatedly set the tone for RCB's victories in the first half of their WPL campaign, what's been even more telling about RCB's campaign so far is that it's not been a one-player show. She has been backed up well by several others who have put their hands up at critical times and made an impact. Harris, Smriti Mandhana, Richa Ghosh, Radha Yadav, Nadine de Klerk, Shreyanka Patil have all had their big moments so far. There are also those, like Arundhati Reddy, who played smaller parts also fairly well.

Every time a crisis hit, a saviour was ready to seize the day. In fact, even on Saturday evening, each of the three new players in the XI made telling contributions: Sayali Satghare's double burst in the powerplay set the tone, Prema Rawat's double strike through the middle overs ensured DC didn't run away with the fightback, and Georgia Voll's useful support to Smriti Mandhana in the century-stand helped the side to a comfortable position despite some early hiccups.

RCB have done well to find themselves in this position. The experiment with Radha Yadav paid off at No. 5, even if the persistence with Linsey Smith couldn't. Even though they find themselves placed well ahead of the rest of the pack on the table, they have been far from flawless.

Like most other teams, RCB have had their share of fielding lapses. With the bat, they have two top-order failures in four games. Harris is aware of that, but wants to focus on riding the highs.

"We've been pretty fortunate with the conditions and winning the toss here with the dew coming in late," Harris admitted. "Obviously bowling first, you get the most out of the wicket, and the most out of a new ball. Having said that, you still have to perform very well to get the most out of it. So credit to our bowlers for keeping pretty much all of our games under 190 (170).

"We haven't really had to chase too many. And then we actually made 180 (182) in our first innings. So, to be honest, it's been a pretty good team effort. There's been multiple people chip in and we've just kind of found a way at the moment to keep scoring runs when there's been pressure applied or we've taken wickets when it seemed like other teams kind of can't.

"We're still just rolling with the flow, but I think we're also coming up with some really good plans on the run in testing conditions or with dew to be able to execute slow balls, especially even out the back of the hand. I know that takes a bit of guts to even try, and it also takes a bit of skill to actually do it well.

"Someone like Lauren Bell or Nadine de Klerk, who's taken pace off and still managed to land it on a length and not just given a full toss or anything like that. Skill-wise, we're going very well, and so far, with the bat, we've had four or five different people stand up. So you can't ask for much more, especially in this format."

On the fielding front, RCB have dropped six catches across four games - many of which were straightforward chances. However, Harris doesn't want to fuss over it much at the moment.

"We're riding on the highs, not the lows. So I think I'll come up with something by the end of the season, maybe, if there's too many of them, too many dropped catches.

"But, nah, like, you're human," she added. "It's sometimes better just to stay in that positive mind frame. Or maybe there's just a need to catch better in some circumstances. But, nah, like, I think we're well aware of where we need to improve, which is a good thing. But I think you enjoy your successes while you're having them."

For now, with less than 24 hours before they kickstart the second leg of their campaign, there is every reason to cherish their present success - and probably, not try too hard to make sense of whether Lauren Bell is really making the ball talk or if is it just talking on its own.