I think its more to do with thier larger networks, its not really servicing but moreso managing technicans who overlook such networks, contingency plans, remote storage etc..At least they're not throwing me to the wolves.. i'd be lost without some time to integrate myself and famarilise with the type of setups they have
All kidding aside...best of luck, but I think that you have it already. Precious few people get 2nd interviews...means they're looking seriously at you.