False-coincidenza ferroviaria is train connection, not train coincidence.
here is the story from the bbc web site...
a thief who stole a �20,000 diamond was caught after the owner of the shop he had robbed spotted him on a train.
giuseppe c. was making his way out of the country after swapping the gem for a fake at an edinburgh jewellers.
fiscal fiona eadie told edinburgh sheriff court that by a remarkable coincidence he ended up on the same train as the owner, who alerted police.
sentence on the 55-year-old italian, who lives in spain, was deferred for reports and he was remanded in custody.