Is it possible to refresh a clone that has a snapshot session attached to it?

We're planning for a customer, who already uses time finder in order to get a daily backup for his Oracle Enviroments.

We'd like to use snapshots in order to provide QA/DEV environments without the penalty time of refreshing all the changes occurring in a clone.

We are aware of the penalty the reads of a snapshot creates on the production volume, so, we'd like to take a snapshot from the clone target of production that it is only accessed by night in order to perform a cold backup, something like:

Production VOL -------------TF/CLONE------------> Backup VOL-------------TF/SNAP------------> QA/DEV Enviroment

Every night the production VOL and the Backup VOL are resync, in order to refresh data, and then be backed up.

What would happen to the snapshot session?

Is it impossible to refresh the clone volume with an active snapshot session?

Do the changed tracks from the Clone refreshing move to the Snap Pool as changed tracks in the Backup VOL?

Is there any other option to provide a similar solution? Like using COFA in the Clone session for the Backup -> QA/DEV Enviroments.

Thanks in Advance.

Regards!