Starting July 2 from 14:40 through July 3 at 18:16, the ONLY outgoing calls on LB's phone bill were to DM. There were no other outgoing calls to anyone else, but there were incoming calls that are blocked out on the bill. We don't know if some of those incoming calls were DM calling her.
Although it is technically possible that the person who redacted the phone bill also blacked out incoming calls from DM, it is not very likely that they would, in my opinion. The purpose of redacting the numbers of those not accused in her disappearance was to protect their privacy, and I can see no reason why they might feel that some of the communications with DM would need protection, when his privacy was already denied. Especially when the whole purpose of making the phone bill public was to bring the communications with DM to our attention. That just wouldn't make sense to me, personally.