Dual Boot Issue - Can't boot back to OS X - Machine reboots

[LeoGFX]

Hello everyone, I'm facing a really weird but I guess common issue and I can't find my workaround on it.
I've been running 10.14.6 and since we're all in contamination where I live, I decided to install Windows 10 for some gaming on a separate Inner HDD. And so I did, successfully.

I am, supposedly, dual-booting however, I can't boot back to OS X. I've had a USB with Catalina install & a bootloader, so once I plug that in and boot from my USB, the clover bootloader comes up. However, once I select the SSD with OS X installed, it just reboots. I've gone in -v mode and I got the messages that you can see in the attached files!

Any help, please?

Currently, I'm running on 10.14.6 with the following specs:

Motherboard: Gigabyte Z370 HD3P - BIOS F10
CPU: CPUi3-8100
GPU: GraphicsRX 580

 

[P1LGRIM]

Moved to Multi Booting.

 

[Going Bald]

Try disconnect Win10 drive and boot - hit the function hot key to select boot device from BIOS list, select Mac OS drive.
Does it boot to Mac OS?