Your distinction of and and or isn't clear. It could be read as:
Complete 6 (heist and theft) missions.
or
Complete 6 heist and 6 theft missions.
In this case it's the former, but thefts are bugged and often (always?) don't get counted.
If you just do 6 covert heists, the unlock will work.
Since the game dropped in May there have been many threads on this and in most of the threads I read it was stated at some point in the thread that covert thefts do not seem to count and only do cover heist missions. Many of those threads also had confirmation from many commanders that once six covert heist missions were completed TV was unlocked.
When I was ready to unlock TV I did only covert heist missions and once I completed six TV was unlocked.
I agree the requirement statement is confusing at best and as stated is wrong. I also think that since this was first discovered in May and the fact that the bug has not been fixed or the statement corrected is not acceptable behavior from FD.
In my case, when I decided to focus on unlocking her, I had no idea how many covert theft missions I successfully finished. I just wasn't counting them before, but I was certain those were the ones I have actually finished, as they were easy, compared to covert heist missions, which I tried, but failed.
I decided to keep count. So I finished 6 covert heist missions first (those where you need to wait 3 minutes for sample container to open and then take the thing, without sounding alarms). No unlock at that point.
Then, after I did 4 covert theft missions I received message from Vesasquez, which ment I did 2 of those missions before starting to count them.
So in my case it unlocked after doing 6 covert theft missions, not counting my heist missions, or it unlocked after doing 6+6 = 12 missions in total.
Because it makes sense along with requirements description, that's what I assumed is true.
But at this point I don't know anything anymore.
