I've worked for three small airlines and one really big airline. AT no time was their a discussion of "Flare" techniques or concepts.
It took seperate study on my part to learn the following:
1. Learn and be aware of the visual clues that can lead you to ''flaring'' too long. For example, when on a runway sloping downhill, if you ''keep flaring'' you will keep floating as the runway is moving away from you...
I was going to write an extended explanation, but have decided I enjoy talking about other people screwing up and if they actually learned something, the whole pprune thing would get dull.