Hybrid vs introgression zone in natural populations
I think you're correct. See Harrison, R.G. and E.L. Larson. 2014. Hybridization, introgression, and the nature of species. J. Hered. 105: 795–809. Also see https://www.differencebetween.com/difference-between-hybridization-and-vs-introgression/

Interesting that you're received no responses to this. It's an interesting (and I think important) question.