Job posting on Indeed and on company website expired, was contacted by the company I applied to for an interview?

I applied for a job at Quest Diagnostics and was contacted by them after taking an assessment to schedule an interview. They haven't sent me the details to schedule the interview after contacting me about it, and their job posting of it on Indeed and on their company website is gone. The job posting was taken down on its 14th day, and its been a few days since they contacted me to schedule an interview.

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What does this mean? What do you think I should do about it?

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