In those two components you can create Conditional field, it means if one of the fields will have value for example user will use checkbox or ratio (x) - addional field (or fields) can be displayed and the user should fill them.
Our form (from addon) has classic structure, all fields are displayed by default.
In your case you can also just keep "Nachrich" field, without "Ich mochte einen..." but just change label of this field and allow user decide what answer he/she want to give you . Add tips what you expect from him.