Drilling Down: ACCC in hot seat as gas buyers demand answers
![Gas buyers are extremely worried Arrow gas will go overseas.](/content/dam/images/1/3/p/g/y/x/image.related.afrIndexLead.320x210.gkvw2t.png/1447332713627.jpg)
In a country that proclaims itself "open for business", the national competition regulator looms as a major sticking point in what could be the world's biggest energy merger this decade, Royal Dutch Shell's $US70 billion takeover of BG Group.