Unfortunately I can't bring the rules to work.
It is explained on pages 62 -64 "INTERCEPTION CHARGES" but there were enough misunderstandings that they published FAQ 4i and FAQ 4iv. FAQ 4iv states that interceptors do not make contact if intercepting from the front. However, per the RAW, they do make contact if intercepting the rear/flank of the charger as it then becomes a charge. The interceptors would then step forward as appropriate. However, as stated in the quote from thread 10099 (see below), it only steps forward into the BG it intercepted, not into any other BG.
As an aside light troops always get the chance to evade contact unless they have already evaded during that phase of the turn.
Not sure where you got this from. FAQ 4iv states that charging skirmishers may neither evade nor halt 1 MU away from interceptors.
A good thread on interceptions is:
viewtopic.php?f=43&t=10099
It is quite lengthy but the authors comments are good and show their intent in writing the rules. One quote from the thread is:
Postby shall » 01 May 2009 22:34
Terry and I are of like mind. If we back to the intent we intended that an intercepting BG would step forward ONLY into its target. This essentially makes it the same for both type of intercept as in the blocking one the other side steps forward. Both times the principle is to get maximum dice into the IMPACT.
We are likely to officially state that the step forward cannot contact a different BG. So there are 2 possibles:
1) blocking interception. Move up to limit. Don't touch any enemy BG at all. Charger moves and steps forward to ma dice at impact.
2) flank interception. Cancells enemy cahrge. Cannot hit any other BG. Stesp forward into target BG to max dice at impact.
Any major issues with this? Another example of where we should have simplified to treated as a charge. What we really mean is: 1) target drops to DISR if if would do so by a flank charge, 2) fight on ++ as per flank charge.
Si