This event is not 'only anecdotal'. Francesco Celani is a top-ranking nuclear scientist with a great deal of skill and knowledge who gave a detailed first-person account (above). So that is the authoritative version- other versions should be ignored.
Ah yes, let’s take everything what Celani says as authoritive, like for example his conclusion about the MFMP test of the “Celani wires”:
(Just as a reminder: This test was so obviously flawed, that any highschool graduate should have recognized that)