Simply attaching meshes vs properly connecting them via booleans etc for games

demigodssw

So guys i was wondering whether simply attaching different parts of an object has any disadvantages and whether properly connecting meshes via boolean or modelling from a single mesh with extrude etc has any advantages? 

Joost

There was a thread a few months ago with a lengthy discussion on the subject, but I can't find it.  IMO if you're baking normal maps or lightmaps it helps to have continuous geo. 
otherwise it shouldn't really matter.

Bek

some discussion here

demigodssw

Thank you bek and joost i googled it but wasnt able to find anything about it.