Wastewater from a basin or shower is different from toilet waste. The product's approved application determines what it can receive.
What the observation means
A shared brand name or similar casing does not establish that a unit macerates solids. Adding a toilet is an installation decision, not a routine owner modification.
A useful next step
Identify the exact model and all existing fixtures. If the arrangement is uncertain, obtain appropriate advice before use or alteration. Do not connect an extra inlet because the pipe diameter appears to fit.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.