Ted does end up learning a lot, being friends with Sherlock. How much of it actually sticks is another thing, but he enjoys hearing about it nonetheless.

They make it to the airport with plenty of time to spare and no need to rush, getting through everything, until they finally settle at the waiting area for the gate.

Ted pulls out the bag of sandwiches and offers one to Joan. It's gonna be a long flight, and he's very persistent about getting her to eat more than a bag of chips.