Just speculation and an alternative theory to ponder but perhaps DH dropped off Britt at or near one of the friends she was texting back & forth with while she was at Styx River.
Maybe a couple of those friends live very close to CW's neighborhood. Maybe those friends have recent drug and/or assault arrests (setting the hypothetical dynamic of potential drug deals combined with physical violence).
Maybe that cell tower near CW's and/or perhaps another nearby were used by KlaasKIDS & MPD to determine the most recent search areas.
Even with the above scenario I don't doubt for a minute that DH didn't tell SOMEONE where he dropped off Britt - whether that person was WH, DK or MK or all of the above... one or more of them knows exactly where DH & Britt went that evening.
JMO of course...
BBM
Does Courtney live "very close" to CW?
Could DH have dropped off BW at Courtney's house?
Or, was the Courtney story all fabrication?
TIA