Definitely some strange undertones to this one, particularly with the rise of Reform. If you're the next leader of the Tories, you'd presumably want to bring back the Reform voters. And Farage will know that.
Someone like Braverman will probably want to get the two parties as close as possible, even up to a merger. But they could also try to steal Reform's thunder by moving even further to the right but ignoring Reform. That may mean some more traditional, one-nation Tories could desert them.
On the other hand, Labour could also do something sensible about immigration, possibly by setting up processing centres in France. That would mean anyone trying to avoid using one, and using small boats, could automatically be classed as an illegal, and dealt with accordingly. That could significantly dilute the immigration issue and that's seemingly all that Reform have to offer.