The company has technology and a plan that are not only feasible but proven. Yes they need to do the validation process but it’s not really in doubt as to the technology. It’s more process’s
Manufacturing is not holding them up from releasing TLD in my opinion and they will likely be more than far enough along when the time comes to formalize necessary Manufacturing details with the relevant RA.
Also, Car-T proceeded while still basically impractical. So I don’t think that is the holdup for releasing TLD.