Many moons ago, i did a decade in high tech, i worked with engineers & draftsmen on prototype material. It was a constant SNAFU, the only saving grace being that some interfaced better than others.
The same animal exists here, in the construction arena, so ask yourself how many times there had been a pre-bid meeting? Did the trades get together before the first hammer swing? ,was there a chance for exchange, Q&A, concerns?
I've worked the latter, as well as those jobs dictated without this benifit, the bottom line is,{scenario #1 & #2} you make the call, you take the fall.....