Time is of the essence in a kidnapping. And if they had read the note "correctly", they would have realized the call was 24 hours away not two hours away.
I don't think there was a way Karr could have known exactly what TIME the Ramseys normally got up. Doesn't matter, no call would ever come. It's not to say that it would not have come. They probably took off the trace when Mr. Ramsey found his daughter and the media blew the find. Maybe there was a call that we don't know about.
Karr had clarified the 27th date by saying get some rest.....The cops missed it and I did, too....at least for a while.
No dogs either. They not only BLEW this case....it was like they did it purposely.
Starting an all out search would have tipped off the "kidnappers" that the authorities had been contacted.
So if the note was real, a search was contraindicated. However, whether they felt the note was phony or not, the failure to bring in an evidence team to do a proper search of the house is just another one of the incompetent things BPD did that day.
Sometimes I wonder if they thought the parents were playing them and so they were trying to play the parents back, doing a waiting game to see if they tripped up.
BPD messed up from the get go and then started a smear campaign as a form of CYA before any proper investigation was done.