Are graphene releases/support completed tied to google releases/support? I had assumed they were able to update their version of android for a phone beyond what

Are graphene releases/support completed tied to google releases/support? I had assumed they were able to update their version of android for a phone beyond what google does. edit - found it https://grapheneos.org/faq#legacy-devices https://grapheneos.org/faq#legacy-devices > It cannot do that once device support code like firmware, kernel and vendor code is no longer actively maintained. Even if the community was prepared to take over maintenance of the open source code and to replace the rest, firmware would present a major issue, and the community has never been active or interested enough in device support to consider attempting this