The scoresheet doesn't seem to count jammed calls for reinforcements by Haulers as jammed communications. I have this in my log:
02414_ A-15 Conveyor call for reinforcements vi
a Transport Network Coupler
overridden.
but Communications Jammed: 0 in the scoresheet.
Ah you're right, apparently forgot that third jamming case for score sheet tally purposes. Thanks, fixed for Beta 6.