[Question] What does the word “collaborative” mean in the phrase “collaborative truthseeking”?

I keep hear­ing this phrase, “col­lab­o­ra­tive truth­seek­ing.” Ques­tion: what kind of epistemic work is the word “col­lab­o­ra­tive” do­ing?

Like, when you (re­spec­tively I) say a thing and I (re­spec­tively you) hear it, that’s go­ing to re­sult in some kind of state change in my (re­spec­tively your) brain. If that state change re­sults in me (re­spec­tively you) mak­ing bet­ter pre­dic­tions than I (re­spec­tively you) would have in the ab­sence of the speech, then that’s ev­i­dence for the hy­poth­e­sis that at least one of us is “truth­seek­ing.”

But what’s this “col­lab­o­ra­tive” thing about? How do speech-in­duced state changes re­sult in bet­ter pre­dic­tions if the speaker and listener are “col­lab­o­ra­tive” with each other? Are there any cir­cum­stances in which the speaker and listener be­ing “col­lab­o­ra­tive” might re­sult in worse pre­dic­tions?