Sky Throne/Flags is full of BS here. We know that BOTH Benavides AND Bowley were inside Tippit's car trying to report the shooting. But only one of those men can can be heard on the DPD tapes---and that's Bowley.
The Warren Commission, however, was confused about who it was who actually had used the police radio, and they incorrectly said on page 166 of the Warren Report that it was Benavides (and not Bowley) who got through to the DPD dispatcher on Tippit's radio.
WCR, Page 166:
https://history-matters.com/archive/jfk/wc/wr/html/WCReport_0095b.htm
But if BOTH men had actually gotten through to the DPD dispatcher that day, then we'd have a total of THREE "citizens" (civilians) being heard on the DPD Radio Tapes. But we don't have THREE such transmissions. We only have two---Bowley's and then Callaway's.
From a 2019 discussion (linked below).....
DVP SAID:
"There is at least one mistake to be found in the Warren Commission's Final Report. (And there are probably several other errors in the Report too, which wouldn't surprise or shock me at all. Finding a few relatively minor errors in a report that's nearly 900 pages in length is, I would think, perfectly normal and to be expected.)
The WC mistake I had in mind today can be found on Page 166 of the Warren Report, where there's an error concerning Domingo Benavides and the J.D. Tippit murder. The Warren Commission incorrectly thought that it was Benavides who had made the citizen's call on Tippit's police radio ("We've had a shooting out here"). But it was later learned that it was really another witness, T.F. Bowley, who made that radio call, which was done only after Benavides had been pumping (or mashing) the microphone for about ninety seconds. [See the quote below from Dale Myers' book, "With Malice".]
"Beginning at 1:16 p.m., a microphone is keyed a number of times on channel one of the Dallas police tapes, as if someone were 'pumping' the microphone button of a police radio. This continues for a little over 90 seconds, right up until the time passing motorist T.F. Bowley successfully contacts the dispatcher. .... Considering the timing of the sounds heard in the Dallas police radio recordings, and the corroborating accounts of three witnesses, the murder of Tippit probably occurred about 90 seconds prior to Benavides' bungled attempt to notify the dispatcher. Therefore, there is good reason to believe that J.D. Tippit was shot at approximately 1:14:30 p.m." -- Dale K. Myers; Pages 86-87 of "With Malice: Lee Harvey Oswald And The Murder Of Officer J.D. Tippit" (1998 Edition)
The Warren Commission was apparently relying on a truncated transcript of the Dallas Police radio tapes that appears on Page 52 of Commission Exhibit No. 1974, which is a transcript that has several radio transmissions omitted, as well as having a "long pause" of 15 seconds omitted (as we can see when comparing CE1974 with this more complete version of the DPD radio tapes)....
https://www.jfk-assassination.net/dpdtapes/tapes2.htm
The Commission, therefore, in trying to pinpoint the precise time of Officer Tippit's shooting, failed to take into account the extra 90 seconds of microphone clicking and pumping that was done by Benavides, which I don't think was even discovered until the 1990s when Dale Myers talked about it in his 1998 book.
So the actual time when Officer J.D. Tippit was shot and killed had to be sometime prior to 1:16 PM, because Benavides' "pumping" begins at exactly 1:16." -- DVP; Aug. 2019
http://jfk-archives.blogspot.com/2010/09/warren-commission-got-it-right-part-2.html