You can link multiple doors up to trigger the door bolts of a single door and it will do odds stuff like toggle the bolts when only a single door closes or toggle the bolts multiple times as a door is closing.
Reproduction
Setup airlocks as in the screenshot and link all doors to toggle the bolts of the external airlock. Walk through both sets of normal airlocks and observe weird shit.
Description
You can link multiple doors up to trigger the door bolts of a single door and it will do odds stuff like toggle the bolts when only a single door closes or toggle the bolts multiple times as a door is closing.
Reproduction
Setup airlocks as in the screenshot and link all doors to toggle the bolts of the external airlock. Walk through both sets of normal airlocks and observe weird shit.
Screenshots
Additional context