What is the timeout variable "viname" in Engagement Engine Rules Inspector Tool?
Engagement Engine, Chat
The "viname-" is just a way of identifying an event (in this case "visitor interaction" since the Rule has a Condition=Visitor Interaction: Timeout). The number after the '-' is just a counter which is incremented (in a couple of ways).
It gets incremented for every condition but also for some client or mouse-out events and some inactivity trackers - this number has no real meaning, just a way to tie a tracker back to a condition.