Audio from multiple sources on one headset.

I've been working on setting up a stream to play some of my older console collection through my capture card and everything is fine on the viewers end, but on my end I have a bit of an annoying issue. I hook the console up through my capture card and into obs and it also passes through to my TV, here's the problem I need the audio output from my TV on my headset so I'm not picking up the TV speakers on my mic. My current solution is wearing an ear bud hooked to the TV under my headset. I've tried monitoring the audio from the capture card in obs, but it adds an audio delay on my end between what I see and hear. Would a mixer be able to solve this issue?