I don't talk to my neighbours other than a 'hello' if we're both in our gardens at the same time.
I have a bush in my front yard that was overgrown and I was planning to cut it back a few weekends ago, but when I had got home, I saw that it had been cut back and I went round to thank them. I was very grateful.
I've also seen the man neighbour out with his cutters on the shared back alley and he's cut some other bushes back in their front yard.
All our individual back yards back on to the shared back alley and he's dumped a pile of the garden waste from the cutting down he's done in the alley but across from my property. The alley is council-owned and they have a strict no fly-tipping rule which is mostly adhered to or fines are given. We have gates either end of the terrace of 12 houses) so no one can fly tip apart from those who live here.
Now, I'm anxious that the council (or other neighbours) will think it's me who has dumped this here. It's been there for about two weeks now with no signs of it being moved. We all have yards so no one has a garden waste bin. I'm grateful they cut my bush back, but wish they'd shift their shit.