In that the Bardo and the Roman Catholic purgatory are places where the soul exists for an indeterminate period of time, they are similar. But that is where the similarity ends.

The RCC has some pretty elaborate constructs about purgatory -- for them, See Marsha’s answer.

Marsha

This is what Han Kang said in an interview:
“In the last part, I didn’t want to describe the death of Yeong-hye. I wanted to end this book with the final scene, where In-hye looks out the ambulance window with a protesting gaze. I felt that this was a See Julia’s answer.

Julia Harpur