I’d use ‘Trigger A’ as the real trigger and ‘Trigger B’ as a condition (or a bunch of them) in order to trigger an action.
It’s probably just in the wording, e.g. you say “If I come home AND it’s dark turn, then on the lights.”
You’d turn this into:
Trigger: change of state from not_home to home
Condition: it’s dark (e.g. after sunset)
Action: turn on the lights