I think it was December 2018 when UA experienced a UAX cataclysmic baggage melt down at DEN right before the Christmas. I think at one point during that melt down UA had around 5,000-7,000 undelivered UAX bags at DEN. UA had to bring in trucks and truck the bags to the destination airport then hire local drivers to deliver the bags to the customers home, or hotel. In some cases if it was a hotel we found that the customer had already checked out. Since Menzies has proven that they can't do the job it's time for UA employees to take over UAX operations at DEN.
Unless it happened again...this also happened in December of 2014, pushing into 2015.
I was SkyWest in Denver in 2014, and we lost the contract to Simplicity. I went to COS December of 2014 to keep my job with SkyWest, and in COS, we were getting planes without bags in the cargo pit. As you also mentioned, we had to drive up to DEN to bring UHauls of Bags down to COS to get them delivered and such.
Absolute nightmare working in COS and finding out flights arrived without bags. SkyWest I am sure had their own issues when they took over Air Wisconsin in the 2000's..but this was a mess and a half.
Very glad to see it finally go to United. I have since left SkyWest and joined UGE in Chicago.
Hope IAD is next! I think this is last UA Hub that still has it outsourced? Is UA Mainline doing CS for Express in IAD?