Other Business Services
Other business services revenue from continuing operations decreased $0.3 million, or 5%, and $0.6 million, or 5%, during the three and six months ended June 30, 2022, as compared to the corresponding periods in 2021. The decreases in each period were primarily due to decreases in data center revenue.
Other
Other revenue from continuing operations decreased $0.1 million, or 1%, and $0.7 million, or 5%, during the three and six months ended June 30, 2022, as compared to the corresponding period in 2021. The decreases were primarily due to decreases in advertising and line assurance revenue partialy offset by increases in late fee revenue.
Operating expenses (excluding depreciation and amortization)
Operating expenses (excluding depreciation and amortization) from continuing operations decreased $12.1 million, or 13%, and $23.2 million, or 12%, during the three and six months ended June 30, 2022, as compared to the corresponding periods in 2021. The decreases were primarily driven by decreases in direct operating expenses, specifically programming expenses of $8.2 million and $18.0 million, respectively which aligns with the reduction in Video RGUs between periods and lower bad debt expense, partially offset by decreases in capital eligible expenses.
Incremental contribution
Incremental contribution is defined as subscription services revenue less costs directly incurred from third parties in connection with the provision of such services to our customers (service direct expense). Incremental contribution from continuing operations increased $5.6 million, or 5%, during the three months ended June 30, 2022 compared to the three months ended June 30, 2021 and $11.9 million, or 5%, during the six months ended June 30, 2022 compared to the six months ended June 30, 2021.
The increases are primarily related to the decrease in programming expense. Programming expense decreased from $45.9 million for the three months ended June 30, 2021 to $37.7 million for the three months ended June 30, 2022 and $95.2 million for the six months ended June 30, 2021 to $77.2 million for the six months ended June 30, 2022, which is attributable to the decline in Video RGUs.
Selling, general and administrative expenses
Selling, general and administrative expenses from continuing operations decreased $6.2 million, or 14%, and $10.4 million, or 12%, during the three and six months ended June 30, 2022, respectively, compared to the corresponding periods in 2021. The decreases are primarily attributable to decreases in costs associated with digital transformation initiatives, marketing expenses, and legal and professional services expenses, partially offset by an increase in stock compensation expense.
Depreciation and amortization expenses
Depreciation and amortization expenses from continuing operations increased $1.5 million, or 4%, and $4.2 million, or 5%, during the three and six months ended June 30, 2022, respectively, compared to the corresponding periods in 2021. The increases are primarily due to increases of equipment placed into service.
Interest expense
Interest expense from continuing operations decreased $20.9 million, or 73%, and $44.9 million, or 75%, during the three and six months ended June 30, 2022, respectively, compared to the corresponding periods in 2021. The decreases are primarily due to a lower outstanding principal balance as a result of the debt refinancing that occurred in December 2021, and the expiration of the interest rate swap agreement in May 2021.