In the event of a Bus Eireann strike, how much ability is there to increase capacity?

[comcor]

For the sake of discussion, let's assume
- A Bus Eireann strike doesn't spread to Irish Rail
- Unions in Irish Rail don't object to capacity being added.

A strike at Bus Eireann is looking more likely as every day goes on.

It occurs to me that there are some routes where Irish Rail provides the only competition to Bus Eireann. e.g.
- Cork-Tralee
- Limerick-Waterford
- Athlone-Westport (which might be for the permanent chop)

What's more, you have other locations where another competitor doesn't serve an intermediate town that is served by Irish Rail and Bus Eireann (e.g. Citylink doesn't serve Ennis, Charleville or Mallow)

Should that happen, there could be a considerable spike in demand for Irish Rail services along these corridors.

Cork-Tralee probably has enough capacity to cope (although maybe not on all services).

What would be Irish Rail's ability to react to this, by either increasing the length of trains on the services or even adding extra services?