LR - it is appropriate to note that this 'experienced' crew did not maintain power after the bounce in order to cushion the return to earth as per 'normal'. Had they done so I guess the boards would not have popped at that height which might have knocked a few 'g' off the second go.
Countless thousands of lines of code have gone into controlling things that used to be called on by micro-switches, yet the system is not intelligent enough to recognize a bounce. Frankly, I'm astonished it could be allowed to happen.
Three seconds is a long time for the MLG to register weight before a bounce, but I can well imagine after being compressed over a good range of travel by a moderately heavy landing, the return travel is hydraulically buffered enough to sum up to that time.
Thinking about it, I suppose the high compression time would be lengthened by inertia of the outer wing sections as they flexed.