I plan to activate another 60 Ghz link on my roof, the two antenna will be approx 60 cm distant, point each one to another two antenna on the target roof.
I don’t need channel bonding, they are on two different subnets, but can two 60 Ghz link work together without interference ?
It depends on how wide is the antenna beam, generally speaking 60 GHz are used for PtP links and have rather narrow beams (like 11° or so), these shouldn't cause interferences, but there are devices for PtMP links that have much larger width (like 60° or so) that depending on the setup may overlap and thus create issues on the connection.