It is, in fact, possible to get a crying baby out of her swing, comfort said baby back to sleep, put baby back in swing, run downstairs and empty a potty while retrieving the button dropped in said potty all while nursing another baby.
Really, I'm learning to do a lot of things one-handed, since I'm almost always nursing one baby or the other. Some tasks I have accomplished while nursing in the past few weeks:
Folding and sorting laundry
Changing diapers (no, but almost. Then someone decided to start pooping on the floor and it was all downhill from there)
Reading books to older kids
Setting up TV shows for the big kids to watch (only a few, I promise...)
Putting away (some) dishes
Watching "Say Yes to the Dress" on Netflix (don't judge)
Ordering pizza online
Putting on sweatpants
Heck, the next baby is gonna feel like such a breeze compared to these two!