On the overdraft issue, I may have found the post you were referring to. On the most recent discussion we have had on this topic (a little less than a year ago, my mistake):The matter of the UK no more having the ability to buy, the overdraft they were not able to pay back, their governments thinking they could not go on after summer 17 has been sourced ad infinitum in the threads we had about this topic in the past couple of months.
So either how exactly does the UK pay for copper, oil, food and steel to keep the entente fighting or how do they continue with 75% less artillery shells?
Could The Entente Win Without America?
And some more lengthy posts about who started it who have no answer to the point who lost it without the USA.
www.alternatehistory.com
The post is by @NoMommsen.They let themself 'flow' into the direction of OTL ... mainly by postponing any decision ... and hoping for the best.
However, they asked veeery cautious and veeery politly Morgans if they might allow them some wee overdraft of their credit line for 'surly' only a short time.
... what eventually amounted to almost 400.000.000 $ (well above anything the british bankers and finance jugglers actally thought of necessary) in May/April 1917.
But by then the US was in the Entente camp
Assuming I am reading this right, this is not the same as being in overdraft and unable to pay. This is agreeing on a level with JP Morgan that the British could exceed their payments, if they needed to. It’s similar to asking your bank for overdraft protection. It does not mean you owe them that much immediately, it means you have a certain amount they will allow you to be in the red without charging you interest.
And based on the quote, it was considered to be more than what the British financial leaders thought necessary and it was only considered after the US had already entered the war.
Perhaps I am interpreting this incorrectly and this was actually the amount that the British ended up owing JP Morgan by that time? That is not how it sounds on first read however.