Best method to coordinate 2 scrum teams on 1 product

Hello,
I would like an advice on what would be the best way to coordinate 2 scrum teams working on 1 product with 1 PO,1 SM, 1 product backlog for both.
I think that maybe using Nexus (or other big process like SAFe) would be overkill.
The project would start in a few month.