BOSTON — Observations and other notes of interest from Monday night’s 108-89 loss to the Boston Celtics: – This is why you don’t let one get away on Sunday night in Toronto. – Not with a schedule now this unforgiving. – No, the expectation hardly was of the Heat, no matter the physical state of their roster, striding out of TD Garden with a victory. – But the previous portion of the schedule allowed the Heat to position themselves so it wouldn’t be an exit with a losing record. – As it is now, at 9-10. – With LeBron James and the Los Angeles Lakers up next. – And then Kevin Durant and the Phoenix Suns. – And then the good-enough-to-beat-the-Celtics Cleveland Cavaliers – This would have required the Heat at their healthiest best. – Instead, in the injury absence of Jimmy Butler, there was no one to pick up the pieces. – As much as Jaime Jaquez Jr.