In case it may help anyone:
The version of “Beyond Westworld” which I acquired has both a pilot episode (395MB) and an episode 1 (303MB). I was not sure whether there’s a difference between them, so I checked. To do so, I watched them both side-to-side, with one of them muted.
They are virtually identical and contain exactly the same scenes. There are some minuscule editing/quality differences, with the most major one (and perhaps the only noticeable one) being that in the former, all red alert scenes have the entire screen tinted with a red hue (which I found rather amusing).

Curiously, this IMDb link talks about a two-hour pilot which I’ve never heard of, so I’m still not sure whether I’ve missed out on some scenes or not. (The pilot I watched was about 48 minutes.)