I can't tell from that chart what the "behavior gap" is, or how the $50k is invested without "index investing", which I would expect to be the default but is th

I can't tell from that chart what the "behavior gap" is, or how the $50k is invested without "index investing", which I would expect to be the default but is the second largest contributor to the total value that this company apparently provides? I'm not skeptical, just don't understand yet.