Nathan what a interesting question. I never gave it any thought before your question, but now i am curious, so I went out in search of answers. What I found was anywhere from 10 minutes to 25 minutes. That time frame includes commercials and notices about cell phones and snacks, etc. Hope that helps answer your great question.
20 minutes.
I usually sit through 10-15 minutes of trailers, but it varies.
Depends on how many trailers are added to the sequence. There is no standard.
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