No this is not correct.
When I convert a lead, any activity that is associated with the lead converts to the contact. I can see this activity on the contact record in Salesforce. However, when the Lead has webinar activity (under Zoom History related list), it does NOT transfer to the contact record.
Example: Linda Smith attends a Zoom webinar and she is created as a Lead in Salesforce. The Zoom Webinar history related list on her Lead record shows which Webinar she registered for and attended. When I convert her to a contact, that webinar history does not convert to contact record. When I click on her contact record, there is NO Zoom webinar History, although the related list is on the Salesforce page.
I can send screenshots if that would help.