1 INTRODUCTION  
2 DATA  
2.1 ASKAP observations  
2.2 ASKAP data processing and verification  
2.3 Optical spectroscopy  
3 RESULTS  
3.1 The HI properties of C1 and C2  
3.2 Optical search for stellar counterparts to C1 and C2  
4 DISCUSSION: HI DEBRIS FROM PAST INTERACTIONS OR DARK GALAXY CANDIDATES?  
4.1 Investigating a tidal origin  
4.2 Investigating a primordial origin  
4.3 Comparison to other known low surface brightness objects  
4.4 Implications  
5 CONCLUSIONS