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bobtait replied the topic: CIR revision questions set 4 Q9
You seem to have misread that rule. If the aircraft is equipped with two independent ILS receivers, it qualifies for the special ALTERNATE minima. That has nothing to do with DA when flying the actual approach. It simply means you can use the reduced alternate minima when flight planning. That's a consideration that applies before you take off.
If, during an ILS approach, you have a failure of the glide slope indicator, or you fail to get an altitude check at the final approach point, then you must switch to the LOC minima. That's a completely separate argument. (See page 292 of the IREX book).