Complex sentence: Cunego's strength came as a blow to his captain Gilberto Simoni; relations between the two during the race were strained when Cunego sprinted away from Simoni to win the 18th stage after Simoni's solo breakaway.
Split into simpler sentences: Cunego's strength came as a blow to his captain Gilberto Simoni. Relations between the two during the race were strained when Cunego sprinted away from Simoni to win the 18th stage after Simoni's solo breakaway.