Here is the crucial difference; hindsight is 20/20. Reflection is not about 20/20 hindsight. It is about learning from the moments or moments. It is about evaluating, questioning, adjusting, and more.
What did I learn AFTER the fact? What might I do differently the next time? What worked? What did not work? What can I put into place to make it work more successfully?
But looking in the rear-view mirror is a different act IMHO. I use the rear-view to see what is coming up behind me. It is not about reflection; it is about reaction.
Pardon the stream of consciousness here. Spending time traveling does that to my brain. Maybe I will be more coherent tomorrow.