At some point Remco had 30 seconds- as far the measuring is correct in the last 2kms ; he finished with only 18 seconds bonus. At some point Bennet was able to come closer to Remco. I do believe if he did not let Remco ride, he could compete.... My impression is that there was no hesitation from either Chozas or Bennett, they did not even flinch. They knew they simply could not compete.
But indeed; you need to able to react at the moment if Remco increases the pace....