As documented, ServiceNow has deprecated the connect chat feature, but still many organizations are using it...
Recently I landed up into the situation, where any record (incident, HR case) created from the connect chat that were duplicating chat transcript and entries showing up on the activity log of the created record (HR Case, Incident) etc.
On the default view of the incident form, there was "Chat Activity" legacy formatter along with the regular "Activities(filtered)". This seems to be causing the duplicate comments issue.
Resolution😃: Legacy "Chat Activity" formatter does not need to be used with the connect chat. You just need to remove this formatter from under notes section on the default form view.
