Judging from tweets at the first day of the Preliminary August 9, where AW was the first witness, the Commander did state that he started compiling data.
https://twitter.com/russellhaythorn/status/1424753669031989253?s=21
Investigator Alex Walker compiled information and wrote 130 page affidavit that led to arrest of #BarryMorphew. Walker says he started compiling data on Day 1 of Suzanne’s disappearance. The affidavit remains sealed and much of what led to the arrest remains a mystery.
When Defense cross examined AW they said something to the effect of So you admit you had BM in your sights from day 1. Trying to imply that LE wasn’t even going to consider any other scenarios ( which we know is not true).
I don’t believe Commander Walker started preparing a statement to take to a Judge to arrest BM that quickly.
There was a ton of data to compile in the first 24 hours that certainly looked suspicious.
Bike scene looked staged
SM last photo ping being so early that morning
Statements from MM2 bf about SM riding habits
Husband being far away from the scene and having someone else report her missing
The reports from the Officers who took BM to the house and the behavior they observed
Im probably forgetting a few more.
JMO