Hi, If a client lost connection before A/B test, and he had not got the variation from A/B test service. Yes, he would use the default value of the variable, but when he submit event, where the event will be added to? A or B?
If the user has not been placed in a group, then their events will not count towards A or B. Their events will be aggregated for analytics, but if they aren't participating in a test, their events will not affect the views and conversions until they have actually received a variation.