You just can't figure out that of the 8 billion+ people on this earth, you are the only one who thinks any of this is important. Why would the HSCA ask either Lovelady or Jarman to testify to an incident neither witnessed. They spoke of rumors they heard, not something they saw. There is zero evidence a cop stopped Oswald outside the TSBD. If you don't understand that, you just have no concept of what constitutes evidence. Hint: rumors are not evidence. That's all the help I am going to give you
You are entering false information there because Jarman was very clear that Lovelady had told him he saw Oswald exit through the front door and get stopped by a cop and ordered back in to the Lobby...Jarman was quite clear that Lovelady told him he had witnessed this...Lovelady seeing this makes sense because films of the front steps after the assassination show Lovelady standing out there...What Lovelady saw was what Holmes heard and related...Lovelady saw Harvey being spooked out the front door by Lee who had stumbled in to the other end of the Lobby down the SE stairs...
What you are conspicuously avoiding answering is the fact that Lovelady lied and told Jarman that he then saw Oswald exit through the front doors anyway and leave the Depository...The reason the authorities covered this up in 1963 and at the HSCA is because they knew they could not answer why Oswald would be allowed to walk right out anyway right under the nose of a cop who detained him and told him to step aside and wait...The 1963 investigation wanted to avoid exposing Shelley's assisting Oswald around police detention and out the Loading Dock...The HSCA wanted to avoid Lovelady trying to plant a false story with Jarman in order to cover up Shelley's intervention...
Frazier's CSPAN admission that he saw Oswald exit the Loading Dock and walk down Houston St was deliberately avoided by Gary Mack, the media, and the authorities...Like with Lovelady, there was no inquiry why Frazier waited 40 years to reveal that...His admission that there was a partly-eaten cheese sandwich and apple on the 2nd Floor Lunch Room table after the assassination was deleted from the radio station archive he said that on and was also unaccountably not pursued in this false nation of America...I see you ignored it too...
The cop who stopped Harvey was not outside the Depository...He was inside guarding the front door...He wasn't named because FBI and the Commission did not want any of the above to come out...