A bit of an adventure on my connecting flight but I made it. Apparently there is a wheelchair in a cabinet for emergencies that must be onboard before you can fly. Ours was missing (thanks to the flight attendant who alerted the captain to that ... not!). We weren't allowed to leave without it, and they couldn't find one for us. I was pretty sure they were going to cancel the (full) flight, but miraculously they found another plane for us with the same seating! We de-boarded, changed gates, and 2 hours late we were on our way. So lucky/not lucky! But very relieved to have made it. People were taking pictures of the cabinet (with missing chair) as we de-boarded to post on social media as a "believe it or not" type of thing. You learn something new every day. I could hear the flight attendants talking, wondering how many flights had gone without it. I guess the airline could be subject to all kinds of fines, etc.