The $2.9bn is part of the float. It’s not just in a different place, it has a fundamentally different purpose and it’s not really owned by FFH because it is “owed” to policyholders. For example, it cannot be used to recapitalize the insurance subs to help them grow in a hard market, and it can’t be used to buy back FFH shares for cancellation.
The cash at the holdco does belong to FFH. The question is how it’s funded. It can be equity or debt and if it’s debt it can be revolver or term. All that’s happening here is that they’re terming out most of the portion of the revolver debt that they’ve already spent (but not the portion they drew down last quarter as a precaution).
If one took your line of thinking, it would never make sense to buy treasuries, which by definition yield less than the cost of debt or equity funding. But it does make sense to buy treasuries, because they’re funded by float at (hopefully) a sub-100 CR.