It definitely was a foul on Robben, I just don't think you call it in that situation. Plenty of fouls in lesser situations and of a more aggressive nature are not called.
That said, a missed penalty call earlier, a change in style up 1-0, and the inability to defend well on set pieces and against Robben lead to the eventual outcome.
That said, a missed penalty call earlier, a change in style up 1-0, and the inability to defend well on set pieces and against Robben lead to the eventual outcome.