I have data from 27 M-22 '69 Camaros. None are even close to that far off. I have the same date as yours in an 02A car. The closest VIN to yours has a late April M-22. Bear in mind that only 2,117 '69s had the M-22.
However a look at other far more common M-20 & M-21 Muncies reveals more outliers. I list 2 Oct '69 cars with May trans; one with June. One of the last '69s built 11A has a June 23 trans. This tells me that it was quite possible for a Muncie trans to either be delayed in shipment somehow or to remain in queue at the assembly plant for many months. I have read that Chevy moved parts between car assembly plants as needed. It could be that your trans was at a Chevelle or full-size plant when production for the model year concluded in June/July '69. It went to Norwood and ended up in your 07A Camaro.