Dan Hardaway on the Mexico City investigations:
https://aarclibrary.org/a-cruel-and-shocking-misinterpretation/
Hardway has stated (I'm not sure that he still believes this) that he believes the real Oswald did go to Mexico City but that he was ordered or instructed to do so by David Atlee Phillips. He argues that this was an effort by Phillips to "dangle" Oswald to the Cubans (for some unstated reason) but that he (Phillips) didn't know that two months later Oswald would be the accused assassin of the President.
However, Oswald's very odd behavior at both the Cuban consulate and Soviet Embassy weakens the "dangle" theory. Or does to me. Oswald acted so oddly and violently that the Cubans wanted nothing to do with him. In fact, Azcue said he thought Oswald was perhaps a provocateur. And the Soviets thought he was having some sort of nervous breakdown. This isn't the type of behavior, I don't think, you would engage in if you're trying to convince people that you're someone that can help them.
Hardway explained this in his review of the Veciana book:
https://aarclibrary.org/a-professional-conspirator-questions-about-antonio-veciana-and-his-book-trained-to-kill/Yes, he no longer believes, as he once did, that Veciana was truthful about seeing Phillips with Oswald (as he says in the above review). So I have no idea how he connects Phillips to Oswald. He does repeat the argument that the CIA was trying to discredit the FPCC and that Oswald may have been either a witting or unwitting participant in some sort of operation. It's all unclear to me what he believes. If Phillips ordered Oswald to MC then he wasn't an unwitting asset right? Frankly, he throws out a lot of claims - he clearly believes the CIA (or elements) were involved in the assassination - but his evidence for this is, for me, extremely weak.
The Contreras claims have been, in my view, completely disproven. As in: Contreras spoke no English; Oswald spoke little Spanish so how did they communicate? Furthermore, Contreras said in one interview that the meeting occurred in 1959 or
1969 1960 which was impossible because Oswald was still in the Soviet Union at that time. And Contreras said he wasn't living in Mexico City in 1963.
At to Duran: Duran said that she worked one week - the week of Oswald's visit - at the Cuban consulate. She had replaced the previous secretary who had been killed in a car accident and that she was a temporary replacement until the new replacement arrived from Cuban. The Friday that she met Oswald (I think it was definitely Oswald) was she said the last day she worked in that capacity. That's a helluva week of work. I hope she got a bonus. After 50 plus years there's been nothing for me indicating that she worked for the CIA.