That is in line with what I've thought, too - albeit IMO CBS may have gotten theirs' first & USA Today later. If USA Today already had theirs' then it might indicate they knew they'd get burned and simply put them up with their other stories when they did. In any event, I always assumed USA Today got them independent of CBS and - until now - thought CBS may have only gotten 4 of the 6 docs while USA Today got the whole bundle. What poster here has revealed, however, is that CBS got the other two as well but never disclosed that fact nor did they let the fact they knew - for certain, they've inadvertently indicted themselves, again - because they didn't put forth those two while revealing the other four as if they were legit (knowing some if not all were totally suspect)
But that's my point. If looking at the same document and CBS's has a few sentences underlined and USA's doesn't, it means CBS either received theirs later or else underlined in ink themselves.