My brother was just complaining to me about Apple Notes. He finds it maddening when he takes a note on his iPad, switches to his phone, opens Notes and it's not

My brother was just complaining to me about Apple Notes. He finds it maddening when he takes a note on his iPad, switches to his phone, opens Notes and it's not there. No loading spinner, no indication that something went wrong, no message that it will be there, nothing. When things go wrong, it is exactly as you say- weird and infuriating.