My dad taught me a trick to put two balls of cotton Wool in some hot water, then put them in the bottom of a cup and hold the cups over their ears, it helps to equalise their ears if they’re in pain from flying (which is probably why they were crying inconsolably). Worth a try if you’re ever in that position again. Some people can be horrible and either forget what’s it’s like or have never had a crying baby you can’t soothe, f**k them, you’ll never see them again anyway.