OK
Both engines responded to A/T command for Thrust and ran at that setting for at least (unknown) seconds (AAIB). #2 then decelerated, then #1 five seconds after. No hesitation, no Ice (Had there been Ice, it was shed at the high thrust level, without damage to engine (AAIB). Now explain what you mean by hesitation at this point. Remember, the engines have both cycled to advanced thrust at this point, and had run there, so no core ice.
Note:
...for at least (unknown) seconds: Counting the response to power level set by A/T, then #2 abandoning setting, then 5 seconds for delay of #1 leaving the advanced and commanded thrust set by A/T.
Oluf: As long as you're at it, explain "destroyed aerodynamics".(your Post #1018). Thanks
Airfoil