In a recent episode of KUWTK, 37-year-old Kourtney told mom Kris Jenner, 60, that "Scott can just take any little thing and run with it and think that like we're getting back together tomorrow."
"Right now I can't even wrap my head around that idea," she added. "There's so much work that would be involved and I'm so not even there yet."
It's a line the oldest Kardashian sister had toed many times before with Disick, with whom she had three children over the course of their nine-year relationship.
"When it comes to Scott, I'm not looking to get back together any time soon," she said in an older episode. "I don't have specific boundaries set, but ... I don't feel like I'm giving any false hope."
On Sunday's episode, she maintained that stance – when asked about the immediate possibility of reconciling with her ex, 33, she said firmly, "It's not in tomorrow's plan"
Keeping Up with the Kardashians airs Mondays at 9.30pm on E!