Any advantage to using 18 awg individually shielded wire over 22 awg
individually shielded wire to route unbalanced line level (-10 dbv
prosumer) audio from room to room?

I'm aware of all the advantages heavier gauge wire provides for
speaker level connections, but wasn't sure if any of those were
applicable to line level connections.

The actual size of the wire is NOT an issue in this particular
application; i.e., it's not getting stuffed through a pinhole or
anything Dimensionally Challenged like that. Strictly curious about
audio performance. Talking about 30 - 40' run max.

Thanks.