[Attila Kadas]

The situation:
Thrower attempts a pass, meanwhile the marker calls stall-out.
Thrower contests the stall-out.
The pass is completed. Another pass is attempted, but it is incomplete.

Am I right to think that play stops after the first pass, so it is a contested stall-out and not a turn?

[Rueben Berg]

Am I right to think that play stops after the first pass, so it is a contested stall-out and not a turn?

Correct. 16.3 only applies to foul or violation calls.