The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Per Wikipedia's[2] Weinberg Tunnel article: "the route was changed to its current state" with the tunnel's opening and a simultaneous timetable change on 15 June 2014, after public platforms opened a day earlier.
Wikipedia dates the Weinberg Tunnel/Löwenstrasse station opening and the Durchmesserlinie timetable change to 15 June 2014, independent of the video's own claims.
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