Is it Possible to combine PV Input Cables?

I have just fitted out my campervan with a new Bluetti Elite 300, a Charger 1 and a 250w solar panel on the roof.

My question is this:
Since the Elite 300 can handle 1200w 22a PV Input, is it possible or safe to combine the Output Cables from the Charger 1 and the 250W Solar Panel into one cable with an XT60 connector ?
Just to save me having swap between the Charger 1 and the Solar Cables also this would give a theoretical combined 810w PV Input depending on conditions.

If you can combine different solar panels what is the difference in combining Solar and the Charger1 ?

Here is the basic wiring of my current setup:

Vehicle Battery + 60a Fuse --to-- 100a Isolator --to-- Charger 1 --to-- XT60 cable --to-- Elite 300.

Roof Mounted 250w solar panel 36.5 OCV ----- Solar to XT60 cable ----- Elite 300.

Kind Regards
Stevie