Two reduced weekly rests on the spin

Radar19:
Was having a disagreement with a friend yesterday about having two reduced weekly rests on the spin. According to him and the DVSA website you can’t have two weekly reduced rests on the spin yet the government website says you can. Last week I worked 14 hours on the Saturday reducing my weekly rest, the week before I had more than 45 hours off. This weekend I ran in on the Saturday morning after running out of shift time yesterday. My understanding is that I need to pay back the hours from last weekend and this weekend in full by next weekend.

Is this correct or have I goofed?

Each fixed week (sunday midnight to sunday midnight) must have a weekly rest IN it
IN meaning at least 1 minute in it to count for that week (fixed week)
At least every other week must have a regular 45 in it

Payback for a weekly rest reduced in week 1 must be paid back in full in one go before the sunday midnight of week 4