Came across this at work recently.
Been in correspondence with this person (more senior & different disciplinary) over the past few days. He always ends every explanation, regardless of how simple and clear the questions and explanations with hope that makes sense.
AIBU to think that this can sounds quite condescending, implying the recipient is lacking mental capacity to digest and understand whatever it is that the sender is trying to relay? If I'm unsure, surely I'll get clarification?