[s11e5] The Collaboration Contamination -

: Their successful collaboration leads to long hours in the lab, leaving their "better halves"—and Raj—feeling neglected and jealous. The "Contamination" of Social Dynamics

: Raj feels abandoned by his "work wife," Howard. He and Sheldon both turn to a pregnant and overwhelmed Bernadette to complain, much to her annoyance. [S11E5] The Collaboration Contamination

: Despite the emotional fallout for their partners, Howard and Amy actually enjoy their collaboration, showing a rare moment of genuine friendship between the two. : Their successful collaboration leads to long hours