This is only available for Baldur's Gate and I don't remember any random encounter in the city.
About Athkathla, the district aren't completely connected.
They aren't on the worldmap and when you travel from a district to another, your party travel between undesigned areas.
When you have a random encounter in BG2, your party is always located on the worldmap between those districts.
We can cross every streets in Baldur's Gate (BG1 - 90% sure there aren't random encounters), but not in Athkathla (BG2 - 100% sure there are random encounters).
Last edited by Maximuuus; 24/12/20 02:11 PM.