Ikea Hällviken sink with Lillviken siphon

Hello everyone

We have a great HÄLLVIKEN sink and when we bought it back then, we also bought the Atlant siphon with it. Everything worked perfectly until my boyfriend accidentally cut the drain hose too short yesterday. So we needed a new siphon. However, ATLANT no longer exists and has been replaced by Lillviken. The problem now: the upper drain, or overflow protection, just doesn't fit. The siphon only has a single elongated attachment, but the upper drain is round. Also, until now it was possible to connect both the washing machine and the dishwasher – but those days are over with the new siphon. Is there a trick to still connect both?

Thank you very much for your help

Hello, the round overflow belongs to the sink and must be reused. At ATLANT, there was only a square connection included. The missing second device connection is shitty. You have to make something out of hose and Y-connector.