I have some questions pending reply that might help answer this but the main issue IMO is whether COD is now considered analogous to Deep E and TGV or the old H and TGT! I don't currently know the answer
Just to clarify, do you mean that we can (and should) legitimately include Deep E in a total risked NAV of TGV because drilling down that far is on the horizon but that including Deep H isn't really judicious because of the likelihood of drilling into the Basement at TGT ? (that's how I'm modelling things anyway).
Consequently, you're checking on how far down the track a Basement well is at COD to deterimine whether we should just include the Mio/Oligo (cf TGT/Deep H) or whether it is valid to include the Basement (cf TGV/Deep E) ?