The current 1k rebate CAN be stacked with the private cash offer you receive from Stellantis or via their website.
Those rebates cannot be stacked with the 10% rebate they have been doing for the last several months.
I don't trust car dealers. Mark Dodge is the only dealer I would remotely trust based on personal experiences- mainly due to their over transparency. You won't find a dealer who is as transparent as Anthony is in the industry. Car dealers, realtors, lenders, sales people have vested interests and money talks- they will deceive or outright lie to make a buck. Not all of them are bad but a vast majority of them are. I am in the real estate industry for the last 15 years and see it far too often.
Stellantis invoices a vehicle during production. That bill is sent to the selling dealer. The price they pay for the vehicle will be that price regardless if they ordered it when the prices were higher (pre 3/5). Now, the 10% rebate, who knows where that goes- it has zero to do with the MSRP change. I could imagine many orders being sold at the old MSRP or new MSRP and dealers falsely saying "you ordered prior to 3/5" and never showing this new internal invoice to the buyer or that a rebate was claimed. They pocket 7k on the new msrp, finance guy who is usually one of the highest paid guys at most dealers get a fat kickback for pocking the store 7k as opposed to giving the better (new) price to the customer.