How can I add a loop after another's completed by trigger overlap

I am trying to add a loop sound to another one when the first is completed. I mean:
I use the Trigger 1 to launch Loop 1 but i want to play Loop 2 when I touch the Trigger 2 AND the Loop 1 is completed; so this will add a second loop playing (at the same time) sycrhoniced to the first loop.
Am I crazy?
Is this possible?
Illuminate my soul and get me away from this frustration.
Also, where can I find more info about the Sound Nodes and its functionalities?

getting an event from ‘On audio finished’ appears to fire when the audiocomponent has finished playing so you could get and event from this that goes through a gate which is opened by your trigger ?