Closing laptop lid during update (didn't seem to hurt anything)

While rushing off to work my MacBook Pro unexpectedly began updating High Sierra - despite me pressing the install "later" option about 30 minutes earlier. I had to get in the car and go immediately so I just grumbled a bit, closed the lid and took off. About half an hour later I got to work and opened my MacBook Pro. It was fine. There was a normal screen asking if data can be shared with Apple for improvements (like when there's a crash). It seemed to be the normal screen when you update the system.

I was worried I'd bungle up my MacBook Pro - but to my surprise closing the lid during this update didn't seem to hurt it a bit. I did have a backup from the night before.

Anyway - is that normally oaky to do? Close the lid while there's an update running?

David