As I was implicating the situation could get out of hand probably because of Big Mom kicking in, and I do believe that Zoro would most likely assist his captain again if a peculiar situation demanded it, yes. That would feel instinctively.
But I would go further than just that and say we could expand our thought and in the first place think about the offchance that Luffy didn't mean that he wanted to handle Kaido by himself in the first place, just that he preferred Zoro to rest until necessary. Many users underlook this point. Luffy's words leave for interpretation.
He didn't order Zoro and Law not to return until he is done with Kaido, but merely for that time at least.
But I would go further than just that and say we could expand our thought and in the first place think about the offchance that Luffy didn't mean that he wanted to handle Kaido by himself in the first place, just that he preferred Zoro to rest until necessary. Many users underlook this point. Luffy's words leave for interpretation.
He didn't order Zoro and Law not to return until he is done with Kaido, but merely for that time at least.
I mean, this dialogue seems pretty cut and dry to me. Doesn't seem like there is room for interpretation here, but you guys do what you want