You don't think that is by design? It's all about finding mismatches all over the field. Trust in Carson to get us in the right play and formation for the defense presented in front of us.
And just for the record, RJ was able to cross the face of Tevin Allen on the first play. No LB, he just got across the middle in front of the safety. Second catch was man up on the DB...he broke inside and was able to catch his guy looking inside and broke back outside. The final catch was a jailbreak blitz(or zero because it was cover 0 man). That drive was all about Carson noticing the mismatch in coverage and trusting RJ. No LBs here.