Conversation so far:
What can you tell me about Unbreakable by Westlife?
Westlife released their eleventh UK No. 1 single, Unbreakable in 2002.
What can you tell me about Brian McFadden's departure from Westlife?
Brian McFadden left Westlife for his family and later released his solo music.
is there any significant facts about the time frame when Brian McFadden left Westlife for his family and later released his solo music that you liked ?
Westlife sold more than 12 million records in a span of three years during this time.
is there any other fact that you found interesting about Westlife besides that the group sold more than 12 million records in a span of three years during this time?
Westlife released their first greatest hits album in November that same year titled Unbreakable - The Greatest Hits Vol. 1.
did Westlife go on tour with their first greatest hits album titled Unbreakable - The Greatest Hits Vol. 1?
In 2003, Westlife went on their third world tour, The Greatest Hits Tour.

Question: how long did the tour last?
Self-contained rewrite: how long did the 2003 The Greatest Hits Tour Westlife tour last?