Just one thing. This site is for improving the general experience of the passenger, not for trainspotting hints.
-----------------------------------------------------
Sorry, the vast majority of services are Dublin Based. What I'm saying is that you could complete part of the journey by loco-hauled train and then finish it with a 22000.
Mon-Sat 1300 Heuston-Cork is loco-hauled, get off at Portarlington. The 1430 Heuston-Galway stops at 1513 stops at Portarlington. Spend the intervening time, err, as you wish.
http://www.irishrail.ie/your_journey...osite%2011.pdf