<Page> INDEPENDENT AUDITORS' CONSENT We consent to the use in this Registration Statement of Hartford Life Insurance Company Separate Account Twelve on Form S-6, of our report dated February 25, 2004 (which report expresses an unqualified opinion and includes an explanatory paragraph relating to the Company's changes in its method of accounting for (a) goodwill and indefinite-lived intangible assets in 2002, (b) derivative instruments and hedging activities in 2001, and (c) the recognition of interest income and impairment on purchased retained beneficial interests in securitized financial assets in 2001), relating to Hartford Life Insurance Company for the year ended December 31, 2003, appearing in the Prospectus which is part of this Registration Statement. We also consent to the reference to us under the heading "Experts" in such Prospectus. Deloitte & Touche LLP Hartford, Connecticut April 12, 2004