It is not a dream

 Dr Flynn was surprised at how close Alyssa and Sinclair were. If they were still in the waiting area it means Sinclair hasn't left since when Venessa was assumed dead during the surgery.

 

 "Okay please wait there I am very close." Dr Flynn informed Alyssa.

 

 "Okay, we would be expecting you then." Alyssa on the other hand replied before hanging up.

 

 "I guess I could not see them because of the crowd here." Dr Flynn mumbled to himself referring to the crowd that crowded the hallway around the theatre.

 

 Dr Flynn not wasting any time immediately navigated through the crowd to get to the waiting area Alyssa mentioned she was at with Sinclair.

 

 Alyssa spotted Dr Flynn's familiar figure from the crowd and waved at him.

 

 Sinclair had already fallen asleep earlier while Alyssa was comforting him so he was leaning on his younger sister's shoulder fast asleep.