You know the dates, but if you must play the role of ingenue: The best hole discussion ran for several weeks from its start date. Even if 'several' meant 8, or 12, that still predates any commentary from Travis by 7 months. Another fact you can't accept because it knocks your silly premise O.O.B.
I think you need to go back and read about the "Dark Ages" because they have nothing to do with the time he spent on the golf courses abroad between 1875 and 1892, just his frustration with the lack of any good places to play during his time in America.
I don't know if he visited any courses other than the ones he mentions during his DAs, or even during his time at school. I think it's likely that he did, but I don't think it matters if he did or he didn't. What does matter is the 2 year sojourn at St Andrews w/men who were the heart and soul of the game, his time spent in the wilderness of golf (the USA between 1875 and 1892), his trips back to Hoylake, et.al., during that period, and his subsequent revelation about the necessity of constructing an "Ideal Golf Links".
I don't think it's beyond the realm of belief to think that CBM eventually saw Travis' article, but if anything it probably would have suggested to Macdonald that here was a soul-mate who understood what the game and its playing fields were about. Given that Travis became a tremendously accomplished player, and had the same outlook as CBM, it doesn't surprise me that Macdonald asked him to be a part of NGLA.
I believe that's a much more plausible construct then what you are trying to present.