What is the grammatical name and function of the expression"while I was watching a 9 o'clock television network programme

Read the excerpt below and answer the question. it was about dusk, one evening during the supreme madness of the carnival season, that i encountered friend. he accosted me with excessive warmth, for he had been drinking much. the man wore motley. had on a tight-fitting parti-striped dress, and his head was surmounted by the conical cap and bells. i wa to see him that i thought i should never have done wringing his hand. in the excerpt above, the use of the word madness is meant to o provide the reason for fortunato's ridiculous outfit. invoke a feeling of anger in the scene. screate a sarcastic tone in the narrator. describe the lawlessness of the carnival season. next question v ron urun