Using the arp to external keyboard ( audio track )

Hello folks I am a newbie,

I want to use Digitone as a part of Nord Electro 6D especially I want to use arpeggiator but as I understand if I connect via MIDI it is not possible to use it because the arpeggiator isnt available for the midi tracks, so my question is:
Is it possible to connect Nord to Digitone via AUDIO outputs/inputs? If the answer is yes can I use Digitone’s arpeggiator with my keyboard? Thank you for your time…