Sorry to be a curmudgeon, but the answer to this question is the same as what we wrote in your two other topics asking similar questions which you haven't replied to:https://www.pianostreet.com/smf/index.php?topic=70536.0https://www.pianostreet.com/smf/index.php?topic=70533.0What makes you think the answer to this topic would be any different? What more are you hoping to glean out of asking this specific question about concertos that hasn't been said in the previous threads?
How do concert pianists memorize concertos so fast?. Is it a combination of great sightreading skills and pattern recognition?.