I havent follow the payment calculations closely, but AFAIK there is an extra payout from TPM to make VHAs debt match.
If VHA takes more debt into the merger it would be a bigger payout to TPM shareholders (and more debt for the merged entity), this loan facility is $500m higher than previously disclosed (i believe), but that doesnt mean they expect debt to be higher, they could want extra headroom incase spectrum becomes more expensive, or they expect to pay higher equipment costs, or rollout faster, or some other reason.
Im a bit out of my depth with the rest of it, i dont know of those margin basis points are good or bad.
TPM Price at posting:
$7.37 Sentiment: Sell Disclosure: Not Held