reduction of non-defining relative clauses

[Trex]

1.The victoria Line, which the queen opened in 1969, was London's first complete new tube for 60 years.

2. The victoria Line, opened by the queen in 1969, was London's first complete new tube for 60 years.

Is 2 correct as a reduction of 1?

[piousoul]

1.The victoria Line, which the queen opened in 1969, was London's first complete new tube for 60 years.

2. The victoria Line, (which was) opened by the queen in 1969, was London's first complete new tube for 60 years.

Is 2 correct as a reduction of 1?

I couldn't find any differences between the two; hopefully, it's not due to my poor eyesight.