If you feed them upright than laying down, they don't need to be burped as much.
I never heard of it because my daughter was always wiggly and moving around. But I did the halfway because bottles have air in them which transfers to the baby. But when breastfeeding there is a lot less. There were times that she wouldn't even burp.
They do that when they need burped?
A lot of times the baby will let you know. Like they will get wiggly or arch their back
I kind of just went with the flow of it. Of my daughter unlatched then I would hurry up and burp her. If not I watched the clock and did I believe every 10-15 minutes I believe. But my daughter ate for 20 at the most so it was our halfway point.