I'm watching the game without sound so unsure what other opinions are, but it looked to me Falcao looked for the penalty but think it was momentum from the keeper which would make anyone fall over in that fashion there - which is a penalty.
Mane made a meal of his too, but it looked a penalty to me again.
Can't believe what is happening with Chelsea though - would never have thought this would happen after the last two seasons. Crazy, wonder how long this will go on for.