While these phrases aren’t grammatically incorrect, they tend to be used in all the wrong places.
“With all due respect, ...” This phrase usually precedes something slightly offensive to or dismissive of the person being spoken to.
How to fix it: If you’re worried about offending someone with what you’re about to say, think of another way to say it.
“Does that make sense?” If you’re actually relaying complex information, the phrase is appropriate. If not, you’re likely using it as a conversation filler, or as a way to engage the listener.
The trouble is, it tends to make a speaker sound insecure about his own words.
How to fix it: Substitute with, “What are your thoughts on that?”
“I hear what you’re saying, but ...” In any conversation, a speaker wants to be listened to. Hearing this phrase is likely to make him feel less—not more—heard.
How to fix it: Show that you heard what he said. Say, “So you’re saying ...” Then repeat back his words. Make sure you don’t start your next sentence with the word “but.”