Peter Navaro always has planned interviews in a tie and shirt with the arms of his sleeves rolled up. If these were planned interviews, why would he not be equally formal? Why wear a tie signifying formality yet roll white shirt sleeves up?
Find a single interview with Navaro wear he is consistent. Always has sleeves rolled up.
That signals he is doing the hands on hard work even though he is a suit.
This level of display , if not intentional, would tell his negotiating opponent that he has a claustrophobia problem and cannot stand having his hands constricted , yet he holds his hands constricted. We know claustrophobia is not true based on this. Leaves the only other option that he has rolled up his sleeves and dedicated to working hard until the end