I must disagree with you. The Lord told EVERYONE he would be dead and buried for 3 days and 3 nights then rise again thus fulfilling that prophecy himself. In fact he and others were seen for a few weeks after before going home. there was no secret. The 2 witnesses are not part of that no where does it indicate that they have any part of that prophecy or that they will spend anytime in the belly of the earth there is no need or purpose for them to do so.
The rumor that his disciples stole his body from the tomb was started because they did not want people to believe that he rose from the dead. It wasn't started by him or his Disciples to hide the fact he did rise.
Also the lord died on Wednesday not Friday. Saturday was the Sabbath (The Lord's Holy Day), Sunday is not the lords Day it is the church’s day (Church made Sunday some kind of holy day) Sunday was/is the first day of the week.
Keep looking up