All, or certainly most, of my teachers kept on telling us to say if we didn't understand what they were on about. They were not being patronising. It's OK not to understand and not to be understood. It's also OK to say you don't understand and to say that you think someone hasn't understood you.
Isn't it? 
It always has been in my world.
Even More Word Pairs (from Aug 2025)
Labour could give energy companies power to access our records.



that's interesting!' (My children rumbled that one years ago!)