Mihawk has way more chance to get off-screened by Shuiryu realistically, since he wasn't with Blackbeard against Hancock.
Also now that Coby Is with Teach, and that we saw Helmeppo wanting to get Seraphims and rescue Coby this Will probably result with Helmeppo meeting the Strawhats at Vegepunk's Island, also It Is not a coincidence that Robin said "The journal also talks about other names you know, do you wanna know Luffy?" And Luffy said no, so helmeppo will be the One telling Luffy about Coby being kidnapped.
This means that Luffy Will immediatly go After Teach after this arc, which makes the Shanks vs Teach theory kinda off.