My experience is cd.co doesn't like/let you double up vouchers.
It's not the greatest deal, but '18 St Henri is $99. Use the FINEWINE25 on 3 bottles, brings down $90.67 per bottle, with free delivery. If want a 6 pack, do it twice.
Get 4 as per above equiv. @ $92.75 and get a free '18 WB BL...