Supercars Investigating Officer Jason Bargwanna declared the tangle a racing incident due to the tight nature of the first lap battle.
Slade made contact with the rear of Rick Kelly at Turn 5, which in turn shunted the Nissan into Lowndes' Holden.
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The Triple Eight Holden subsequently spun, creating chaos for the rest of the field behind.
“In a first lap when there is a bit of push and shove and cars are making contact all over the place, sometimes it goes wrong.
“What I'm looking for is to say ‘is someone being careless? Is there a breach of our rules?'
“Sladey did make the contact but I'm going to say it's a racing incident.”
Contact between the pair damaged the front suspension of the Prodrive Ford, resulting in a trip through the gravel at Turn 10 and a lengthy stop for repairs.