Monotasking can also be as simple as having a conversation.
“Practice how you listen to people,” Ms. McGonigal said. “Put down anything that’s in your hands and turn all of your attentional channels to the person who is talking. You should be looking at them, listening to them, and your body should be turned to them. If you want to see a benefit from monotasking, if you want to have any kind of social rapport or influence on someone, that’s the place to start. That’s where you’ll see the biggest payoff.”
*That awkward moment when you realise that NYT need to explain to our generation how to have a meaningful conversation
Also, from another article: listening as editing
"Some of what a speaker is saying doesn’t accurately reflect what they truly mean. Perhaps they want to touch on a sensitive, sad point, but are frightened of being too heavy or of imposing. Maybe the speaker wants to pin down why something was beautiful or exciting, but are getting bogged down in details, repetitions or subplots. There might be an emotional truth they’re trying to express but the quality of their insight is undermined by the feeling that it would be more normal and safer to stick to factual details.
All these tendencies, a good editorially minded listener knows how gently to correct. They will in the kindest way possible ask the speaker to unpack their feelings more intensely and elaborate upon emotions with a sense that these will prove hugely interesting rather than boring or alarming to the audience. They help the speaker to close down stray subplots, and nudge them back to the central story, which has been lost in details. When the speaker gets tongue-tied from fear, the good editor-listener is on hand with reassurance and encouragement. They know how to signal an open mind and hint at a welcome berth for all manner of unusual-sounding but important confessions.