In the shower scene with Max and Helen, the indecipherable conversation was Helen telling Max about the tasbih beads that Max had mistakenly thought were rosary beads at the beginning of the episode, to keep him alert and awake. But Executive Producer David Schulner said it was unusable because of the shower, and after watching the scene without sound, was moved to tears and chose to keep the scene indecipherable.
When Lauren puts on a posh British accent to tease Casey for his plans to leave New Amsterdam for an upscale private hospital, he replies by calling her accent "whack," or terrible. Janet Montgomery, who plays Lauren, is actually from England and does speak with a British accent in real life (though it doesn't sound as mockingly emphasized).