They're both losing subs to non-sat TV (including their own streaming alternatives, DTV Stream and Sling) but there continues to be churn between the two. And yes, I would certainly imagine that the churn is more in the direction of DTV to DISH than the other way around, although DTV is, I would bet, doing a much better job of retaining customers by converting them from sat to DTV Stream than DISH is by converting them to Sling (which is sub-optimal anyway given Sling's much lower revenues).
As to the doubters of a coming merger, I just keep pointing back to Ergen's public comments, repeatedly calling such a merger "inevitable" and most recently backing up what I've been saying for months, which is that a merger is on hold for now due to fear of campaign-season politics which could trigger a regulatory move to quash the deal (or place "onerous" conditions, such as rural-area price controls, on it that both sides would very much like to avoid).
