Different Gardena hoses can be attached if they are compatible with the Original Gardena System connectors. The Terrace Spiral Hose (7.5 m, 9 mm) uses the Original Gardena System, which allows it to be plugged onto any Gardena tap connector and connected to other Gardena hoses with the same system.

The Gardena Textile hose Liano Life 1/2, 10 m set is likely compatible if it also uses the Original Gardena System connectors, as Gardena products are designed for interoperability within this system. However, you should verify that the hose diameter and connector type match (the spiral hose has a 9 mm diameter, which corresponds to 3/8 inch, while the Liano Life hose is 1/2 inch). Adapters may be needed if the diameters differ.

In summary, hoses with Original Gardena System connectors can generally be attached together, but check diameter compatibility and connector types to ensure a proper fit.