I'm on the Android app, on my phone. Saw a little Delta icon in notifications so took a look. Well it just happens that my spouse is flying to LAX today and I can see the details even when logged into my account. I've never seen this before. The only thing I can think of is he probably paid for this with a credit from a flight we were both on, which was canceled. I can't explain otherwise why I'd be seeing his info. I can look up his info on delta.com but it's not automatic.