Luffy's going to want to protect Vegapunk yea but it's gonna be a Katakuri situation where Kizaru will give him no choice
It depends on Zoro beating Lucci by the time the both get up, he's far from the fight below right now so he will put his focus on what's in front of him
That goes for anyone else up top in punk records, they're focused on preparing the escape route and even then it would take too long to reach down where Saturn is at
The ones who are down there are being held up by Saturns abilities, they'll probably be freed by the time Luffy and Kuma attack Saturn but they won't be able to interviene by the time Kizaru gets Luffy away from the fight
Much like how Luffy was able to hold up Kizaru the inverse will also be true
Real