I don't understand this sentence
The priest stepped back, finished. In cases of sudden death he had always used the short form of the last anointing, and here he had mechanically followed custom. He hadn't referred to his prayer book once. Dr. Burkley blurted out, "Is that all？" The doctor had never challenged a priest before, but the brusque ceremony offended him. It bore an uncomfortable resemblance to the rapid by-the-numbers procedures of the nurses. The passing of a President, he felt, ought to be a more solemn occasion. "Can't you say some prayers for the dead?" he asked.】
what does "it bore an uncomfortable resemblace to the rapid by-the-numbers procedures of the nurses"mean?