This is all kinds of adorable. By this point, we're well aware that airports are uncomfortable places to sleep. There's nothing worse than having a partner who can overcome that and drift off, while you're left bored and wide awake. This couple was determined not to let that happen to them.
By working together, they've made a sort of human cocoon which provides comfort to both of them at once. Our only concern is that it looks precarious. One slip and they'll both be on the floor.