Analytic estimates of the final-to-ZAMS ratio of the specific orbital angular momentum h (left panel), the orbital separation a (center panel), and orbital velocity of the secondary v₂ (right panel), assuming q^ZAMS = 0.75 and μ_env = 0.75, which are representative for the example system of Sect. 3. Blue colors correspond to a decrease, red to an increase. The mass transfer efficiency β_RLOF and the angular momentum parameter γ_RLOF are assumed constant throughout the evolution.