The first 5-10 moves are extremely explored and chess players at this level have memorized which is the best reply in each case, what are the possible alternatives that are better for their own game style, what are the alternatives that are worse for the opponent game style, what are the unusual but not bad alternatives that can surprise the opponent. There are whole books about that. Whole libraries. https://en.wikipedia.org/wiki/Chess_opening

Probably cheating after the 5 or 10 or 15 move if the opponent did something interesting may give someone an edge, but getting help in the first of second move it's unbelievable at this level.

Note that there is a whole page in Wikipedia about all the possible good possible second move of Niemann: https://en.wikipedia.org/wiki/Alekhine%27s_Defence