Chanterelles need live
roots and forest floor duff from the Douglas fir, without the living
root system of their host tree, they might take but probably won't do well if they do sprout from the spores.
(stems of mushrooms are only good for making soups for most of us) In a Laboratory we can sometimes get a cloning action going in agar agar petri dishes inoculated and placed in an incubator for about a month.
Instead of needles you will stand a better chance with
wood chips or coarse sawdust, it will be sketchy without the active tree roots. (the roots send out exudates that attract the fungus since it is an arbuscular mycorrhizae species, and that tells you the connection to living roots)
I wish you great luck with this experiment.
Redhawk