The applicant shall state whether it has pending, or knows of others who have pending, with this commission or with any other governmental department or agency (State or Federal), an application or filing which concerns the subject matter of the proceeding before the commission. If one or more such applications or filings is pending, the applicant shall state, for each application or filing pending, whether the granting of any such other application or filing will have any effect on the grant or denial of a certificate, and whether the granting of a certificate will have any effect upon the grant or denial of any such other application or filing.