The loss modulus G'' is more than two orders of magnitude smaller and develops a weak frequency dependence at low frequencies and concentrations, indicating minor contact problems. The onset of the relaxation of network defects is visible at larger concentrations and frequencies. For a quantitative test of our data we consider that PEG and PCL stars have molar masses of 10.7 and 11.8 kg mol -1 , respectively, and the average density of the polymers 47 in the dry networks is around 1.13 g mL . Two stars of this type in a co-network produce four network strands, if all reactive groups are connected, leading to a molar mass around 𝑀 𝑒𝑙 ≈ 5.6 kg mol -1 per network strand. The entanglement molar mass 𝑀 𝑒 in melts of PEG is around 67, 89 2 kg mol -1 and does not exceed 3 kg mol -1 for PCL melts. The plateau modulus of entangled melts is ∝ 𝜙 0 7/3 and there is 𝜙 0 ≤ 1/3 for all of our samples. Thus, the about 2-3 entanglements per network strand in melts reduce to an entanglement contribution to modulus of the order of 𝑘𝑇/4 per network strand for the largest 𝜙 0 , so that they become negligible for 𝜙 0 ≈ 𝜙 * . Therefore, we use the phantom model prediction 5