Unless I’m missing the point of your question, it’s working as is, from post
https://forum.seeedstudio.com/t/xiao-ble-sense-in-deep-sleep-mode/263477/120?u=pj_glasso above.
uses the TAPs to wake it up.
HTH
GL 
Unless I’m missing the point of your question, it’s working as is, from post
https://forum.seeedstudio.com/t/xiao-ble-sense-in-deep-sleep-mode/263477/120?u=pj_glasso above.
uses the TAPs to wake it up.
HTH
GL