Assuming that the $500K (secured) promissory note is coming from Don, which may go to fund Resverlogix, you have to ask why the Promossry note is not directed straight to Resverlogix. 

Zenith provides Don with more security than Resverlogix can offer, seeing that the HL Debenture holds security offer RVX's Intellectual Properties.

Resverlogix has not seen funding outside Zeniths since May 23, 2023. 

Not sure what to make of it ... Koo