From the episode

Of the difference between Brock Bowers, the tight end. And as a tight end would be played in the NFL. Or Brock Bowers, the wide receiver. So sideline coaches. And a player who was hurt, I believe. Would hold up 11. The number 11 personnel. When there was 11 personnel on the field. But when it was 11 personnel with Bowers on the field. They would hold up a B sign as well. So it was 11B.

STACKED’s take

NeutralRole

Defenses treating Bowers as a WR, not TE; Buffalo used cornerback coverage.

The source notes that Buffalo's defensive scheme against Las Vegas treated Brock Bowers as a wide receiver rather than a traditional tight end, using 11B personnel (11 personnel with Bowers designated as a receiver) and assigning a cornerback to cover him; this reflects how defenses are adapting to Bowers' skill set and deployment.

Brock Bowers headshotBrock BowersTE · LVPlayer page — value, ADP, projections, and every insight