Right now, Sharegate Apricot and Micosoft doesnt have capability of moving teams channel from one team to the other. However as per microsoft they are working on it shows since last two years. There is a tool in the market that can do now. But since Apricot provide most of the admin features I think it would be great if it can also provide this capability.

Refer below link for the tool in the market that offers that capability.
https://agatsoftware.com/microsoft-teams-channel-management/