Is there any extreme of physical pain that a fully enlightened person would find unpleasant on any level? In other words, by not conceptualizing sensations of physical pain, do fully enlightened people still experience unpleasantness and simply not label it as such, or is the experience fundamentally without anything that an unenlightened mind would label as unpleasant, so that the degree of pain becomes like pitch in music?
It's said that enlightened person feels single pain (only physical), while not enlightened feels two pains (physical with mental pain).

SN 36.6, Sallatha Sutta:


  The discerning person, learned, doesn't sense a (mental) feeling of
  pleasure or pain: This is the difference in skillfulness between the
  sage &amp; the person run-of-the-mill.