Correct on all accounts. Queuing is on for the hunt group and no VM needed at this point. VM is not 'ON'.
Main hunt group Collective Call Waiting, overflow mode is Call.
overflow set to 10 seconds
No answer set to 15 seconds
Queuing is on, length is no limit.
overflow set to hunt group with user (with forwarded external number) set to ring sequential.
If I dial the extension in the overflow hunt group it forwards the number. But if I call main number, call hunt group (tech support) then it rings 5 times and eventually goes back to Auto-Attend. The call is never forwarded.