combined bundles

we plan to create bundles with multiple products (usually3) without any option to change each of them.

Now the question is, can i use such a bundled product in another bundle.

For example a bundle containt mutitple items. some of them changable some arent. but one of the items shuold be the other bundle (containing the 3 fixed products).

In our test, only a product of variable product can be used as bundle-itme.

Even grouped products (woocommerce standard) does not work for us.