In the real world it's one of those grey areas. You should appeal with your explanation as to why you didn't take that train and saying which train you did use.
What you'll find is if a train is just a few minutes late, staff often do still attempt to apply restrictions based on what the timetable says, but once the delay gets a bit bigger they don't bother. E.g. Can you catch a 9.29am service that departs a minute late at 9.30am? Strictly yes but in reality it's best not to. In reality, overcrowding and the proximity of alternative services are also considerations.
What you'll find is if a train is just a few minutes late, staff often do still attempt to apply restrictions based on what the timetable says, but once the delay gets a bit bigger they don't bother. E.g. Can you catch a 9.29am service that departs a minute late at 9.30am? Strictly yes but in reality it's best not to. In reality, overcrowding and the proximity of alternative services are also considerations.