RT has been used before, sometimes clearly a reference to Tillerson. But working further from your angle, if RT is meant to point to Rizvi Traverse, it may be that the company sent somebody, not Suhail Rizvi, and whoever was sent is either not known by name to Q, or if known by name to Q, would net be recognizable by name or initials by Q-readers.
Wouldn’t you think Q would have used RTM instead of RT?