Thanks for question. The stack is composed of host stack & ll. Then we do have 2 series, STM32WBA5 high end segmentation (peripheral overall stack ~130Kbytes) and STM32WB09 (mid end segmentation from 512 to 256 Kbytes flash) (peripheral overall stack ~80Kbytes). For sure considering not only peripheral but central role as well stack size will be drastically increased
