Comment by TuringNYC

I think that is great if you want flexibility, and I used to do that also!

What i'd assess at 6:30 is whether people are on meetings or on focus time. If you have monitors with zooms full of 5-6 people, I wouldn't think that is flex hours, i'd assume that is a meeting being scheduled at 6:30.

On the other hand, if you have people focus working, you cannot draw any conclusions from that.

Personally, I stay at work late. But there is a difference between me being obsessed with a problem and working thru the evening trying to solve it (awesome for me) vs meetings that are being scheduled at 6:30pm or 7pm