Players and coaches from the Patriots and Chiefs weigh in on the similarities and differences in both dynasties.

Every NFL season — as sure as there will be hand-wringing over officiating and scrutiny about whether the Jets and Giants can extricate themselves from their malaises — it happens. A team goes deep into the regular season without losing and the talk begins about whether that team might equal what the ’72 Dolphins did in producing a perfect,

Although there are no direct reports of the Chiefs copying New England’s strategies, it is likely they have analyzed the Patriots