Tbh, I'm not sure if that really means anything beyond admin stuff. Collaboration still happens at schools without such a classification system, and the process of collaboration is really up to individual faculty members rather than department heads. Classifying all those med faculty under the bio department isn't going to make them collaborate more imho. Unless there's an angle to this that I'm not picking up, such as it making it easier for them to get funding for stuff?
And if this was true, then why haven't other schools done something similar? Not that Pritzker isn't a phenomenal program, which it really is. Just that it feels like an advertising gimmick with weakly explained logic on their webpage.
Maybe
@NickNaylor can shed some light on this?