4-6 weeks is when my new social activities with new people just start to snowball! Definitely not long enough.
I think its more than long enough to know what living in any particular neighborhood is like though.
One other thing is that you are able to notice other people that travel like that. The proverbial “jetsetters” even without the socialite connotations, nomadic. Many more in the last few years. Interesting crowd. There are people that like the same circuits of places so thats nice.