Talk me through Den. Nobile, please

[mykl]

I picked up a few scatterings from hobbyists that have had to give up on raising orchids.
Several dendros appear to be nobiles and I have no experience. Is their overwintering caused more by cooler temperatures or the change in the light availability?

In other words, would they still require a dry/ rest period if kept indoors where the temperature is relatively constant?

Would artificial lights change their habits?
TIA