Hi Microburst2002,
When I fly at MAX, I have noticed that my engines are giving me already maximum thrust. I have literally advanced the thrust levers to TOGA and the N1 did not increase a bit of a bit.
Why on earth did you feel the need to select TOGA?
If autothrust was engaged, see FCOM, Performance, THR Thrust ratings, MCR Maximum Cruise DEFINITION
"It is the maximum thrust approved for normal cruise.
There is no thrust lever position corresponding to this thrust rating.
It is not displayed to the pilot, and the N1 limit which is displayed in cruise is the maximum climb N1.
The FMGS uses the maximum cruise N1 to compute the aircraft maximum speed.
In manual thrust setting, in cruise, the pilot should limit N1 to the maximum cruise N1 that is equal to the displayed maximum climb N1 minus 1.9 %."