Hello sherrardk! Im only passing my own opinion here, and trying to put your mind at ease too, I have a 2yr old and a 5yr old and live in mews type houses, all attached to each other, next doors have had some right dingdongs, children included, and to be fair I at one point many years ago was considering reporting them from the shouting that I heard. turns out, getting to know the couple and the children that its all fine, the girls come and babysit for my 2 when they in bed and we have a meal out, but I did keep a diary of what was happening at the time, just in case!
Screeching is something im keen to avoid with mine, but I do shout and sometimes have to give myself a 'time out' before I get to screeching!