(at around 1h 42 mins) The life-support system is disconnected from the throat. Before and after that scene, it is on, and working.
Life support attached at trachea, yet father speaks unimpeded. Should have had unit blocked off....if connected, air could not pass over vocal chords allowing speech.
At 40 min and 48 min, Robert's bed moved first to the church and then to rec room. The life support machine needs to be plugged-in all the time.
From morning till late night, Nurse Carrie is on duty. Three back-to-back shifts in a rich private tertiary hospital are very unlikely.
At 8 min mark, Robert is picturized in the hospital intubated. But he is conscious and talking. It is technically impossible.