How can you discuss what you don't know? I think this is
@cv5 point. If you have no understanding of the things he mentioned regarding how it all relates, what discussion points can you bring to the table? The reality is you can't.
We all learn differently and I can appreciate not everyone can sit for hours at a time listening to teaching. I find as I get older (and other reasons) I have to break up my hour long lessons into smaller parcels or I get too overwhelmed with information. The more technical that information, the harder I find to concentrate for long stretches.
This much I know, the teacher that never upsets your way of thinking? Is not teaching scripture properly. Jesus didn't just upset those who hated him, He upset the thinking of those who loved Him as well.
@Genez is fond of quoting 2Tim.4:3 with good reason. If you sit under a pastor that never says anything you don't like to hear? It is most likely you need to find another pastor.