The speaker stayed to 'mingle with' the audience after the lecture.
The host was too busy to 'mingle' during the party.
It's a story in which fact 'mingles' with fiction.
(..) Scar! Mm-hmm...? Drop him. Impeccable timing, your majesty. Eyyccch. Why! If it isn't my big brother descending from on high to mingle with the commoners. Sarabi and I didn't see you at the presentation of Simba. That was today? Oh, I feel simply awful. ...Must have slipped my mind. (..)1994 The Lion King