Thank you for your list of included items; it does not look like there is a short Aluminum Tube Assembly.
Then, can the motorized Floor Brush be inserted directed into the Main Unit (with Suction Motor and Battery), without the Aluminum Tube Assembly? I can then vacuum my carpeted stairs with the motorized Floor Brush without the long Aluminum Tube, which would be more convenient for me. Thank you.
If my question is not clear, here is an example with pictures of what I am looking for: https://www.amazon.com/dp/B07QJBV557/ref=sbl_dpx_B0948RSRQW_0