Questione giuridica chiave
Whether the appellant's right to be heard was violated by the refusal to hear his superior as witness.
Decisione estratta
No violation occurred, because the appellant failed to confirm the request in time and the authority could reasonably deem the evidence unnecessary.
Motivazione estratta
The witness request was not properly maintained, and the decisive factual point was already established from the file; an additional oral confirmation would not have altered the assessment.