Separate Remotes?

Im have 2 boxes w/ 2 remotes. My problem is, for example, when watching TV, if you use the remote to change something, the second box is almost in direct line-of-sight so it gets changed as well. Anyway to separate these 2 controls? We cannot move either TV(or boxes).

there’s probably no good way to do this

the alternative that comes to mind is stop using the standard remote

and instead use the wd smartphone remote

that is done via wifi and connects to 1 specific device at a time

Thank you, KAD. Seems like a workable idea.