Graphic answer to questions why Rham & JJ are not active both together

[long distance]

There were multiple questions/calls throughout the week why Pats dont activate both remaining RBs at the same time.
One answer that has difficulties to come across is that they dont play special teams.
Second answer - about QB/play protection - comes from Bolden himself:



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[borg]

Which back was chipping/laying wood to Bosa?