Conversation so far:
Who has the most goals in El Clásico
Lionel Messi is the all-time top scorer in El Clásico history with 26 goals.
how about who has the most assists in el clásico
Lionel Messi has delivered the most assists in El Clásico history.

Question: who has the most apperances
Self-contained rewrite: Who has the most appearances in El Clásico