Yes, we have witnesses that say blam and then, blam blam, close together. I wonder if the dictabelt recorded these? I know the dictabelt has been ruled faulty but I don't know about this part.
We also have witnesses who said the shots sounded evenly spaced together. Or that, as Kenneth O'Donnell did, the first two sounded closer together than the last two.
Here's O'Donnell's WC testimony on it:
Mr. SPECTER. And was there any distinguishable tempo to the [three] shots?
Mr. O'DONNELL. Yes; the first two came almost simultaneously, came one right after the other, there was a slight hesitation, then the third one.
And the Z film indicates, to me, the last shots at Z-223 and another at Z-313. That's 90 frames or five seconds. So the last two shots - if we're "reading" the Z film accurately - indicates that last two shots were not closely spaced together. They were a full five seconds apart.
So which witnesses should we rely on?
Re the dictabelt: In my view, experts have shown that the dictabelt recorded sounds a full minute after the assassination and the sounds came from a motorcycle with a stuck microphone that was nowhere near Dealey Plaza. If the motorcyle was in Dealey Plaza, for example, why don't we hear any crowd noises? According to the witnesses who were there the people were applauding and yelling as JFK passed by. But we seemingly don't hear any crowd noises on the dictabelt? Why not?