One question to ask

under either full flexi or semi flexi loan, is it no difference in term of interest charges between:

1) Advanced payment thus the loan outstanding reduced
2) Park the money under CASA for interest reducing purpose

coz from what i understood. let say if i pay RM2k for the loan, it will reduce the outstanding balance hence the interest charge will be reduced.
OR if i put 2k under the CASA, the interest charge will be reduce/offset by 2k amount.

am i right ?
if yes, as a conclusion. it's better to park money under CASA than make advanced payment due to liquidity purpose ?

please enlighten me
Thanks

For 2,
Coz for semi-flexi we will open an savings acc for the loan, and the money put in the savings will automatically offset the interest in daily basis. is n't it that way ? or any technical term i should use for that particular savings acc.