Not really… just a slightly higher end of gear, most of dells professional series will do it from memory, the gigabyte on my desk does it.

Yeah… tend to agree - it’s doable but OP would be reaching for some fairly hectic gear to solve a pretty small problem. Consumer monitors with PIP definitely exist and would be cheaper.

If all you’re looking to do is nicer input switching, a KVM switch would be a better solve.

Capture cards would be more useful if you wanted to record the gaming sessions. AFAIK they will always introduce latency as they are usually designed for a situation where that is fine.

It’s easier to think about it in terms of where is the wind going.

Air moves into adjacent regions that have lower pressure. It begins everywhere but is moving towards these areas of lower pressure.