Would the A330 suffer Mach tuck??
Mach tuck is well understood and the horizontal stabilizer will get you out.
Does raise a concept though, in the infamous 'coffin corner'
Assumptions
-Crew at 35k feet wouldn't have tactile sense of speed due to control forces and wind noise, assuming noise canceling headsets and tight speed range.
-Sailplane experience, (is that common in Europe starting out?), so they know what stall buffet is from thermaling.
Scenario
Pitots slowly build ice and computer advances auto throttles because computer thinks it's slowing down. Reach buffet boundary, get a split, autopilot disengages, master caution and warnings, crew notices ASI's are split, but low, confuse buffet with somehow being in a stall, advance power levers and push forward, when they're already at Vne say. Now we're hot in turbulence. Of course you were hot when the computer took you there in this scenario.