My father said that we could put tape around the washer hose to lessen the gap between the hose and the pipe. I've found some adapters that go from the ~1" washer hose to our 2" pipe. My father said though to leave a little bit of a gap between each hose, while the adapters I've found online seem to completely seal the connection. Which is correct? Should I leave an air gap or completely seal it?
EDIT: The house was built in 1952. Based on my understanding, the plumbing should look like this:
NOTE: Periodic gurgling occurs in the bath drain if the bath hasn't been used in a couple of days. We believe this is because the vents are blocked to some extent, and get flushed out after showers, but then settles after a while.
EDIT 2: This home is a rental, we do not own it; not sure if that matters in your comments.