I found this

, watched it and found it very plausible. Check it out if you're a long time fan of MGS. I also found

 where the speaker explains that we never got an English trailer for Ground Zeroes only English subtitles, which takes place 9 years before Phantom Pain (Which we got an English trailer for). Why did we not get an English trailer for Ground Zeroes but we got one for Phantom Pain? Ground Zeroes takes place a couple months after Peace Walker. Why would Big Boss' voice change in just a few months span? It all makes a lot of sense to me.

. Let me know what you think about all of this.