Base Teach is strong
But if Oda really wanted to show he had ACoC, he would do it blatantly, like this:
We wouldn't have pages of debate about whether or not he has it, it would just be a fact.
[automerge]1707720934[/automerge]
Oda could have even had Law say "he's using the same type of haki as Luffy!" to make it really explicit