To my ears, the "n" on "An" at the beginning of this sentence is inaudible.
Almost sounds like 'tha t-seacaid ghorm'...
Is he trying to trick us?
On the other colored jackets they were not requiring the t- Why here?
I guess that the jacket in the other sentences was indefinite – didn’t have the article an the before it.
It’s seacaid a jacket, an t-seacaid the jacket.