Distance between low and high speed buffet at FL350 is depending on the weight mainly, it is difficult to determine this without additional information.
It seems to me it's a tougher job to stall a tripple 7 all the way down in to the sea as you have a big control column in front of you. This makes it easier for the guy next to you to recognize what control inputs you are actually making and maybe even correct you from doing wrong.
However, anything remains possible.