[Baymax gives Hiro as much time as he needs to think over his answer, quietly waiting and blinking for his friend to sort out his thoughts.

He's glad that Hiro wasn't happy about Callaghan's death, if he was, then they would've had a lot to talk about.]

Death is not usually a happy topic.

[That was an understatement, he knows how badly Hiro had been affected by death.

Baymax tilts his head.]

Messy? How so?

[From a completely medical standpoint, all feelings were messy, a mix of chemicals being produced by the human body. However, Hiro's using the term in a way he's not familiar with.]