Convert AVAudioTime to systemUptime ?

Is there a relationship between AVAudio’s time here: docs link

and the system uptime? docs link

I’d like to be able to convert between them, but I’m not sure how they're related, if at all.

Specifically, I'd like the hostTime in terms of systemUptime because several other APIs offer systemUptime timestamps.

Thank you.

Convert AVAudioTime to systemUptime ?
 
 
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