Do I need to install both SR1 and SR2? Or can I just install SR2?

Hi, 
I have yet to install SR1 and I see there is now also SR2 available, for both Trados Studio and MultiTerm. The link for the Trados Studio 2022 SR1 update has disappeared. Does this mean I can just install SR2 and get all the benefits of both?
Thanks!

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