I will save you all the details, but these are the 2 last lines of transcript with my brokerīs customer support...
Me
So just to be clear: you are saying that US red news caused the EURJPY spread to be 4.9 pips ?
XXXX Support
yes since this is a cross, announcements on the USD can affect most pairs as banks use the majors to make prices fro crosses. For this reason there will tend to be spread variation and episodic volatility when there is news that affects the USD and JPY predominantly
Me
So just to be clear: you are saying that US red news caused the EURJPY spread to be 4.9 pips ?
XXXX Support
yes since this is a cross, announcements on the USD can affect most pairs as banks use the majors to make prices fro crosses. For this reason there will tend to be spread variation and episodic volatility when there is news that affects the USD and JPY predominantly