I think it's implied

I think it's implied
by wcnitz (2019-05-20 08:20:13)
Edited on 2019-05-20 08:20:32

In reply to: Too bad he didn’t do that posted by DBCooper

That he couldn't do that as long as Drogon was bound to Dany. But it's possible I'm letting book lore cloud my judgement on that.