Like I said. Ambiguous and stilk being debated.
Actually in terms of the ruling, there is no ambiguity whatsoever:
2 ships overlapped, “Touching”
Anything else and they are not, simple really.
Any 2 parallel objects that then move in a straight line the exact same distance cannot physically overlap.
The only real ambiguity in this scenario is the fact that the technical term FFG decided to use in the rule book is contradictory in terms of it's real world usage i.e. touching means physical contact.
If “Touching” in the terms of the rules was called for example “Close Quarters” there would be no ambiguity at all.
E.G
“If 2 ships are in close quarters they cannot shoot at each other”
“If you would overlap a ship, instead you perform your move as far as you can, then those ships are in close quarters”
“Ships that are Physically in contact but are not in close quarters may shoot at each other”
Does this make sense now?