On Thursday night, McGregor explained to Jimmy Kimmel what that process was like for him.

Id been waiting for the call to come for two years, McGregor said.

I thought maybe theyve lost my agents phone number.

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Credit: ABC

Then I got a call from JJ just shortly before the film was released.

He asked me to come in and said, Id love you to be a part of it.

McGregor wasnt the only Obi-Wan recruited for this scene.

Filmmakers combined McGregors line reading with archival footage of original Obi-Wan Kenobi actor Alec Guinness.

McGregor explained the breakdown.

The line is, Rey, these are your first steps, McGregor said.

But they got Alec Guinness to do Rey, which is extraordinary because hes not alive anymore.

So Alec Guinness is saying Rey, and Im saying, These are your first steps.

Watch the clip below.