It isn't a coincidence that Oct 30 was chosen as the date, it aligns with VMWs final pay date so final wages under VMW can be paid out and settled. If the close before that they would have to run an extra payroll cycle between pay periods which could probably get messy.
This way they close payroll with VMWs end of cycle and then start payroll under BC for those staying.
Question here is when / how is severance going to be paid - is it also on Oct 30 or is it going to be issued by Broadcom separately sometime in November?