If OP had status on UA but wanted it on AC, then that could be earned by putting flight miles into Altitude through the first half of 2014 and likely achieved that status, while still using your UA 1K status to get STARGold priority services and lounge access. While AC can be faulted for not responding sooner and confirming granting of status, OP made effort to put flights into that AC account. (Not sure where OP is based and if s/he even flew AC during this period.)

When I increased my flying on UA and wanted to benefit from E+ and upgrades, etc. I was an AC SE. However, I didn't request a status match from UA, I just started putting my flights into an MP account and made my way up the tiers to 1K. Through that period I used my AC*SE/STARGold status benefits when flying UA. (And I continued to put my AC and some STAR flights into my AE account to continue earning AC status.)