I don't know anything about this whole area. Are rights granted by novelists to playwrights usually time-limited or constricted in some way like this? I would have thought that once the novelist has allowed a playwright to adapt the novel for the stage, that right would continue indefinitely. Or does such an agreement typically have limits?
On a related note, if there were a published Sergel script, does the novelist have the right to say that the print version of the script is no longer allowed to be sold?
