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He's right on Heat.... Back-tris... chest-bis... push pull bro, push pull
Gotta disagree.. check out HST protocol for example. Or old school Iron Age stuff - entire body 3 times a week. If training your entire body is fine, limiting that to back and bis is also fine. Heavy back work stimulates the biceps depending on what movements you do, after they are warmed up from lats, a few BB or DB curls cooks em. If you do heavy chins, direct bicep work isn't even need a lot of times.
I've done all the push pull, entire body, HIT, 6 day split etc. stuff over the years. I've trained Back and Bis for years with great results too. the Volume/Frequency/Intensity ratio is FAR more important than anything else.