I hear ya. Many recruiters/bosses simply don’t want to hear anything about part-time work at all. I think that’s a mistake on their end – it could be a major benefit that would make that employer stand out from the crowd. But many companies sadly doesn’t think about it that way.

PS. As someone else mentioned here, and in case you find yourself on the market again: You might want to try to discuss part-time only after receiving a written offer. Then you know for sure that they want to hire you. And then you have some leverage.