Well, a very unsatisfactory conclusion, I'm afraid.
The answers are indeed DIALOGUE and ARMAGEDDON - so although we got the 'right' answers, one can't actually write them them in, (well, not both of them), because the G of Dialogue crosses with the E of Armageddon.
As is typical of too many publications these days, when it comes to crosswords, there is no apology or indeed any reference to it at all. In other words, business as usual at the Evening Standard!