Seeking advise for ''monthly'' offers!!!

Hello!!! I would like to ask about the following:

I have set a basic offer from the 1-31/10/22 and then a different one from the 1-30/11/22. When i search as a guest from the 15/10-15/11/22 i can see that the algorithm cannot combine these two discounts!!! This happens only for ''monthly'' stays with two or more months included!!!

Does anyone know how to overlap this?