Bypassing Sony SACD protocols - is it possible?

The SACD player should have its own DAC which will then send an analog signal to the preamp section, assuming the streamer/Preamp/DAC accepts analog inputs.

If the Sony has a digital out, such as toslink or SPDIF, then you can play the CD layer of an SACDS using the DAC of the streamer.  If the streamer has HDMI input, then you can send the DSD layer to the DAC

as a separate consideration, to know whether you are getting/retaining SACD's DSD format, or if the unit automatically converts DSD to PCM

https://forum.audiogon.com/discussions/sacd-players-models-with-dsd-processor-used-and-new-not-dsd-conver

My OPPO player will output 88.2k digitally when playing SACD.   They claim it has something to do with the Nyquist freq .   and that  176.4 would not sound as good....

I am not aware of any dedicated SACD player that can output DSD stream via Toslink or Coax. I believe you need a universal player with hdmi output and D.BOB to extract DSD 64 stream to any DAC that can decode DSD.

https://geerfab.com/audio/

Another option is to rip the SACD layer yourself as a DSD file which you store on your streaming device and route that to your DAC. It takes some setup work to do and requires a particular set of Blu-Ray players to rip the disc, but it's not terribly difficult if you follow the right instructions.