Guys, what I am trying to say is that there seems to be something impossible (perhaps I missed something?) in the theory as applied to the clock synchronization above. The two clocks are being synchronized by using light signal. According to Relativity, both observers are correct in their observations: the observer on the train (rest frame) observes both clocks to start ticking from 0-second. The observer on the ground observes the clock in the rear end of the train to start ticking from 0-second followed by the clock in the front after a time interval.
As the train comes to a stop, assuming both clocks are still separated by a distance, which observer has the correct synchronization observation (or results?) if the clocks are brought together for comparison? I mean is there still a time-interval between the two clocks? Maybe the observer on the ground is wrong?