I'm not sure why people insist df should be for learning. It's totally ineffective as groups wipe once, give up and people drop. People are queuing with different goals and to expect a group of random people from df to teach a fight, over asking in pf people to join and teach, is unreasonable. In pf you have more opportunities to use voip and people who join expecting to teach tend to be more patient.

OP, don't expect to learn anything from a df group. They are not obligated to teach you the fight. Have your free company help you and use pf to fill in the empty spots. Even if you don't clear you will get way more out of it than from df making a future clear more attainable.