Are you really suggesting that by 9PM that Frazier didn't know Oswald was a suspect in the JFK assassination because he hadn't been charged at that point? Wow. I've read some kookery but that one is far out. Frazier is sitting in the police station. Oswald's arrest has been widely reported. They have checked his car and home with his cooperation. What does Frazier think they are looking for in his car if he has no idea Oswald is a suspect in the JFK assassination?
Do you understand the difference of a person of interest and a suspect?
Are you really suggesting that by 9PM that Frazier didn't know Oswald was a suspect in the JFK assassinationNo, I'm suggesting that Frazier, after his arrest at the hospital at around 6 PM, probably understood that police wanted to talk to him and Oswald as part of their investigation in JFK's murder. Not everybody who is arrested in a murder investigation is automatically a suspect. I don't think Frazier knew exactly what was going on, what Oswald's status was or what the officers were looking for when they searched his car. They may well have only told him it was a routine search. Police officers are not in the habit of providing much information to a detainee.
One thing that's certain IMO is that Frazier, from the moment of his arrest at around 6 PM, had no access to news sources.
But all this is a far cry from your initial claim that Frazier, at 1:30 PM, left the TSBD and went straight to his sister to get their story straight because Frazier somehow knew that Oswald was the suspected assassin. You seem to be shifting the goalposts.
Edit; from the article posted by Bill Chapman;
https://www.dailymail.co.uk/news/article-3326233/I-drove-Lee-Harvey-Oswald-book-depository-don-t-believe-shot-JFK-52-years-assassination-Oswald-s-friend-says-convinced-patsy-real-gunman-grassy-knoll.htmlBuell remembers that Oswald had very little to say during the trips that often took less than 30 minutes.
'We would chit chat, but nothing of importance and certainly nothing about politics. That never came up, and Kennedy was never mentioned,' said Buell.
'Oswald was not the most talkative person, and nothing stands out from our conversations.'Buell said Oswald was 'quiet' during the 20 minute drive and no one mentioned the visit of President Kennedy to Dallas.
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Buell, his mind in a whirl from the shocking events, left work and drove to visit his step-father who was in hospital.
Hours later at the hospital he was arrested by police after they were told he gave Oswald a lift to work.
He was questioned for hours as detectives suspected he was involved in an assassination plot. At one point he was even asked to sign a confession admitting his part in the killing.
'I just told them what I knew, and told the truth,' said Buell. 'They kept on asking about Lee and the ride to work. I told them all I knew, but I could see they suspected I was involved.