Couple of pictures.
This is the biggest difference I’ve seen. It is during a walk uphill. @sprague says Lingo is compensating for time delay in measurement based on interstitial fluid by predicting “now” BG measurement from rate of change, and sometimes overshoots. I think that’s probably what’s happening here. Probably had a quick drop due to activity, but I’m sure I did not have anything close to a 57 mg/DL blood glucose level. About 1.5 hours later, after a birthday dinner (with cake), my BG jumps and they agree.
Just from casual observation they seem closer at higher levels.