Trigger Condition To Detect Previous Chat and Not Fire Trigger
If an agent has served a chat and that chat has been ended, then a condition is needed to NOT fire a trigger.
Example: Customer initiates chat and is served by agent. Customer ends chat and proceeds to checkout page where a trigger is set to ask if they need help if on that page for 2+ minutes. Trigger should not fire because the agent just talked to them. Asking if they need help just after you served them is annoying and looks bad.