HACK - I attached my MAJGULL blackout curtains to my SANELA curtains using leftover RIKTIG wire curtain hooks. Way easier than everything that I was thinking of doing. It looks and works
MAJGULL Black-out curtains, 1 pair, dark turquoise, 57x98" - IKEA
Ikea curtains get stuck. I bought Majgull curtains and Racka curtain rods. My curtains are jamming where the rods extend. Ikea told me they had no solution and to return the rods.
MAJGULL Black-out curtains, 1 pair, dark blue, 57x98" - IKEA