the idea for the "decimal repeater" was floated inside AP nearly a decade before (I know who floated the idea...)
The other brand didn't make it to production, as they didn't even want to come in behind someone else.
Of course, the shoes have been reversed; according to principals, Martin Braun was working on his sunrise/sunset EOT when AP released their landmark WRISTWATCH Equation du Temp in 2000...Martin Braun was thinking, "Scheiss!" while AP took all the accolades.
Of course, AP admits they were inspired by one of their own pocketwatches from the early 20th C, and experienced, well read collectors know the EOT complication preceded even that...
And so it goes...