From the press conferences I've seen, it appears to me that DA Tierney speaks only concerning the case(s) he is dealing with at the moment. He has detailed the team's working method: they take all the evidence from one victim and work just that. One case doesn't influence the next.
The evidence tells them whether or not RH was involved and whether or not the family was home. I see Tierney's stressing that the family was out-of-town or out-of-state tying the circumstances of the case under discussion to those already charged, highlighting RH's method of working on the particular crime under discussion. I thoroughly believe that when/if the Taskforce ever works a case where the family was home and the MO changes (we've seen it happen already) then Tierney will state that the family was home at the time of the crime just as he has said they were not home with the 6 RH is charged with so far.
RH is charged with the crimes the authorities believe they can win convictions on. Unless they reach the same stage of belief for other crimes, I doubt we'll even know which cases they are working.
It is my opinion that some of the deaths we believe belong to RH don't, and some we've never considered in his tally do. Among all the cases, even though the taskforce believes they belong to RH, there are probably some that will never be charged because there's not enough evidence to secure a conviction - yet. Forensics continue to improve. Prob better to not charge with weak evidence and wait than charge and lose the conviction as double jeopardy won't allow the same person to be charged later for the same crime.
I doubt we'll ever know for sure what the DA understands and doesn't understand as he has said they work in secret and he only talks when they can bring charges.
So far, so good, but the waiting is really tough.
