Even when lines were both built years apart they can manage to integrate them well in other countries. I think a great comparison with Drumcondra would be here at
Partick in Glasgow. I've used it dozens of times and it's so handy to take a bus just as far as the station then take either the Underground or the Glasgow version of DART (Glasgow has the best suburban rail network in the UK outside London) to either Buchanan St or Glasgow Central (undergrond heavy rail station). Partick has one ticket office for both the Underground and for 'DART', despite the 'DART' being run by FirstScotRail and the Underground being run by Strathclyde Passenger Transport (the DTO with balls!!) themselves.