Stage 2 while waiting for Stage 1 appeal decision

Hi, I am going to appeal Stage 1 decision for review, however my current visa is expiring. Is it possible to apply stage 2 while waiting appeal result to prevent from overstay?
Has anyone had similar issue please share your experience.

How do you intend to apply for stage 2 without stage 1 endorsement letter. ?

Sorry for confusion. I have applied both stage 1/2 same time to prevent from overstay, however 2 weeks ago i received endorsement that was unsuccessful. And now I am planning to submit appeal, while my stage 2 application still open (havent attended biometrics appointment yet). So, I dont know if it is correct way OR i need to withdraw my application OR home office will automatically wait until appeal decision made OR I need to varry application to skilled worker etc.

I havent seen any online source which explains it more clear, so any help will be great!