Originally Posted by
uastarflyer
which is what exactly?
Not sure if it refers to this, but if you have Spire AND Ambassador, keeping the Ambassador alive will also keep the Spire level alive, without any stay or spend necessarily. You just need to pay the renewal fee for Ambassador. ( and you also get the choice benefit upon renewal which rebates 25000 points )
I got my Spire level initially via status match from Hilton.