Not sure but dude has great comedic timing honestly
Him and Tessa had chemistry in Thor (not sexual chemistry either). She's funnier than I thought and glad she's getting the push she deserves too. (Creed, Thor, Annihilation, etc.)
I don't think it will be overkill. Thor was 2017 and this is in 2019. Plus Hemsworth and Tessa would have been in other movies by then to kinda help casual audiences forget they were in Thor together somewhat
Word to The Tourist
They work together and Chris has great timing. He can be funny and carry a comedy.
And yes son the tourist was all about casting two stars regardless of how they work together and assuming it would print money