This morning there was a collision between an Re 6/6 and a Martigny-Orsieres RABe 514 unit
Sorry, no, this is the only thing which is certain: It was /not/ unit 514. It was either 511, 512 or 513, but the number on the front is "collided away". These are NINA units, still numbered RABe 527 511-513 and belonging now to RegionAlps CH-RA, like the RBDe 560.4