The trouble when one vendor tells you about their installation at a Tier 1 pay TV provider like Sky, is that they tend to not want to list all the help they may or may not have got when they worked on the account. That came up at TV Connect this week when Conviva told us that it provided the analytics which identified the threshold point when online video from Sky was switched from one CDN to another. We had already been told a few weeks earlier by Nokia, that its Velocix CDN was the “main” in-house CDN for online Sky services like Sky Go and Now TV and that it provided the decisioning behind switching CDNs. Faultline Online Reporter…