Answer:
Since 2019, the deduction limit for interest expense deductions on qualified higher education loans is $2,500. In order to qualify for this deduction, the taxpayer's adjusted AGI must be less than $85,000 for single filers (Lionel's income is below the threshold).
So Lionel will be able to deduct $1,440 as interest expense (above the line deduction).
Lionel can also deduct $2,500 form the American Opportunity Tax Credit for higher education expenses.