There’s a specific Jeep Connect subscription for it: the Hands-Free Active Driving Assist subscription. It does not overlap with, and is not part of, any other Jeep Connect sub. It appears that you get 3 years free; I don’t know what the sub cost is after that.
Oddly, several people (I think all GCL owners) who have basic Active Driving Assist—not Hands-Free Active Driving Assist—have reported that this sub is showing as currently active on their Jeep Connect accounts. None of their cars have the interior camera that’s an integral requirement for the Hands-Free ADA system, so they cannot actually use it.
The technological reason that it requires a subscription is because Hands-Free ADA only works on “select highways,” so the car must connect to Jeep’s network to determine if the road you’re on has been selected.