Historical clue formulations

• Joined together — 2024-07-26
• Strong as an ox, in slang — 2024-06-13
• Hooked up, as oxen — 2021-01-31
• Like oxen pulling a plow — 2015-11-02
• On a farm team? — 2015-06-05
• Harnessed, as oxen — 2012-06-11
• Like farm oxen — 2003-02-17
• Like oxen pulling a plow — 2000-07-10
• On the team? — 1997-06-25
• Joined together — 1997-03-06
• Hooked up, as oxen — 1995-07-11
• Harnessed — 1995-06-08
• Married, in a way — 1994-01-02