Triggers in Xenogears. They are different.

[Akari]

Today I understand meaning of 8th file in fields files in xenogears. It's quad triggers. Unlike in FFVII, where gateways (triggers to load next map), background triggers (for opening and closong doors and like), lines (real triggers that handled by script) which was two points lines, here it is quad. And there are no hardcoded behavior. Everything handled by script. There is jump opcode that jumps if party leader not in trigger. This thing replace all previous things.
For example gateway can be created as folows:

TriggerJumpTo(trigger_id, #1);
MapLoad(map_id);
#1
return;

If we enter this trigger - next map will be loaded.

[Cyberman]

Well Xenogears was coeval with FF7 but I doubt it used the exact engine.  I suspect Square was expecting the game to be delivered as fast as FF7 and that was why it was so cut up at the end (sad but true).

That being said I'm not surprised it's different but has similar functionality, they likely shared ideas between the teams however they had different ideas and different managers the later makes a big difference in how the project evolves.