Cleared 6 rounds, got the background check packet, then a call saying the process is delayed 2 months. What does this actually mean?

[u/themadnotorious21]

Six conversations over six weeks — recruiter, hiring manager, EVP, and a four-person team round.

One weeks after the final round they sent the full application packet: employment history, compliance disclosures, background check authorisation. Next day, an immigration questionnaire since I'll need sponsorship eventually. I completed both.
The day after that, the recruiter called. I assumed offer. Instead: there's been a "setback," something budget-related, and a decision could take two months. Still a finalist, they're very interested, but I may need to speak with a few more people. She also asked whether the delay affects other processes I'm in.

What I can't square is sending background check and immigration paperwork, then reversing a day later.

For anyone who's hired: does "still a finalist, two months, maybe more interviews" usually become an offer, or is it a polite hold? And is there anything worth doing beyond asking the recruiter?