Sorry to dumb things down here, but DAL pilots potentially be used to fly struck work?

I'm just curious here, personally I think struck work is struck work, regardless of union. Does our contract allow, or protect us from refusing, flying that would normally be flown by our codeshare/JV partners when said partners are on strike?

I'm sure there is a technicality in how struck work is defined, but I don't think it would bode well to have the DAL pilot group picking up flying that is considered struck.