So with that in mind here are the potential clashes for the remainder of the seasons up to Round 20 in the NRL. These are to the best of my knowledge so it may not be 100% accurate.
ROUND 2 AFL: Swans play the 4:40 Sunday game, clashes with Parramatta vs Penrith. Lions game at 3:30 (daylight savings still in effect for Saturday) may clash with Storm vs Knights should they go into Golden Point
R3: Swans play 4:40 Saturday game, potential clash with Parramatta vs Canberra if it goes GPET. Lions play 4:40 Sunday clashing with Newcastle vs Tigers
R4: No clash for Swans who play Saturday Night, Lions play 4:40 Saturday , potential clash with Titans vs St.George/Illawarra
R5: Swans play 1:10 Saturday, should get 2nd half of Canterbury vs Gold Coast. No clash for Lions who play Saturday Night. No Thursday Night game so MMM will probably cover the Roosters vs Dragons ANZAC Day game (Brisbane will get their team on FNF). MMM Melbourne will also get MNF this week after Collingwood vs Essendon (Storm vs Warriors)
R6: Lions host the Swans in the 1:10 game on Sunday. Won’t clash with the normal Sunday MOTD (which involves the Broncos) but with no MNF prior to the rep weekend it may mean that there’s only 3 NRL games covered that weekend
R7: No clash for Sydney as they play Saturday Night, Lions play against Port in the 4:40 game so they’ll probably not get City vs Country (like they care anyway)
R8: No clash as both the Swans and Lions play on Saturday Night
R9: No clash for Swans who play Friday Night, probably no clash for Lions who play 1:10 Sunday
R10: Not sure which NRL games MMM will call in a shortened round leading into Origin 1. Swans play FNF (Brisbane will get that game as Broncos play Tigers), Lions play early Saturday but no clash as there’s no Saturday fixtures scheduled before 7:30.
R11: Lions play 1:40 Saturday which clashes with their Broncos trip across the tasman (the 3PM Saturday game which is 5PM over there). Swans play Saturday night on the Gold Coast so no clash. 2 Sunday games with no TNF after origin (probably cover Souths vs Gold Coast).
R12: Lions play 4:40 Saturday, may clash with Newcastle vs Warriors. Swans play 4:40 Sunday in a Bridge Battle (GWS), clashing with St.George vs Canterbury which is being played literally down the road.
R13: Lions play 1:10 Saturday with no clash given this round leads into Origin 2, Swans play 1:10 Sunday but game should be finished in time for Warriors vs Roosters.
R14: Swans have a Bye, Lions are at 1:10 Saturday with the first half of Newcastle vs St.George/Illawarra clashing, but they’ll get Canterbury vs Broncos that night. Again no TNF NRL following Origin 2
R15: Lions have a Bye, Swans play 4:10 Saturday clashing with Warriors vs Gold Coast
R16: Swans play Friday Night in Geelong so no clash, Lions play 1:40 in the Q Clash on the Gold Coast, but no clash given it’s the lead in round to Origin 3 (no Sat Afternoon game)
R17: Swans play Thursday Night but no clash as no TNF NRL game scheduled the night after Origin 3. Lions play 4:40 Sunday clashing with Penrith vs Parramatta. No Saturday Afternoon game with the last NRL byes scheduled, but Brisbane’s trip to play Souths will be on for Brisbane
R18: Swans play 1:10 Saturday clashing with first half of Canberra vs Warriors. Lions 1:10 Sunday meaning there shouldn’t be a clash with St.George/Illawarra vs Wests Tigers.
R19: NRL Draw TBD, No clash for Lions who play Saturday Night, Swans play the 3:20 game in Perth (1:20 local start) so that will clash with whatever the 4PM NRL game is.
R20: Swans play 1:10 Saturday clashing with 1st half of Sat Afternoon game (Saturday Afternoon game certain as Warriors play away), No clash for Lions who play Saturday Night in Adelaide
R21: No clash for Swans who play Saturday Night, Lions play 1:10 Saturday at home, clashing with potential Saturday Afternoon game
R22: Swans play 1:10 game in Hobart against North, Lions play 3:20 Sunday game at home to Geelong
R23: TBD in both codes, but suspect the Lions who play St.Kilda may get a Sunday afternoon game if both aren’t in contention as expected. Swans may also get a FNF or SNF game given they host Richmond.