Is it a bad sign if a manager is having shorter 1-on-1 meetings with you?

Our 1-on-1 meetings are supposed to be 30 minutes. But, my meetings tend to be shorter (e. g. 15 minutes) as the 1-on-1 meeting of a more Senior Engineer before me tends to go over time.

Is it a bad sign if a manager is having shorter 1-on-1 meetings with you?
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